Oscars 2019: All of the Biggest Winners, Best Performances and Most Memorable Moments

“Well apparently that wraps up the 91st Academy Awards," Roberts told the crowd as the Green Book team took their Oscar statuettes and headed for the after parties. "I would like to say congratulations to all the nominees, and goodnight to Bradley Cooper's mother and my children. Thank you for watching!"

Julia Roberts had the distinction of awarding the Oscars' top prize to -- drumroll -- Green Book. "Aloha, and thank you...This is like a dream!" producer Jim Burke began, as the cast and crew hugged onstage behind him. Octavia Spencer, an executive producer on the project, seemed in shock as director Peter Farrelly said, "The entire story is about love!...This [movie] doesn't start, by the way, without Viggo Mortensen. All these awards are because of Viggo and Mahershala and Linda. I give this award to you, my friend."

Guillermo del Toro, who won this award last year, presented it to Cuarón, who previously won this honor in 2013, for Gravity. The Roma auteur noted that “being here doesn’t get old." “I want to thank the Academy for recognizing a film centered around and indigenous woman, a domestic worker...a character historically relegated to the background. As artists, it is our job to look where others don't. This responsibility becomes much more important in times where we are being encouraged to look away."

Frances McDormand and Sam Rockwell, last year's winners in this category and Best Supporting Actor, reunited to present this year's Best Actress Oscar to Colman, an unexpected but more-than-deserving win for The Favourite star. "It's genuinely quite stressful," an emotional Colman began. "This is hilarious! OK, I have to thank lots of people. If, by the way, I forget anybody, I'm going to find you later and give you a snog." She went on to give credit to her director and "the two loveliest ladies to fall in love with," her co-stars Emma Stone and Rachel Weisz.

"He's going to cry! I'm not" she said as she thanked her husband and the camera cut to him in the audience. "Ahh, thank you so much...Lady Gaga!" she concluded, as Gaga laughed and blew her a kiss.

Congressman John Lewis got the biggest standing ovation of the night as he and Amandla Stenberg took the stage to announce the night's final Best Picture nominee, Green Book. "I can bear witness to that time," Lewis, a civil rights pioneer who was a leader of the Nashville sit-in movements in the 1960s, told the crowd. "Black men and women, our brothers and sisters, treated as second class citizens...Our nation bears the scars of that time, as do I."

Reigning Best Actor and Best Supporting Actress winners Gary Oldman and Allison Janney teamed up to present the Bohemian Rhapsody actor with his first Academy Award. "We made a film about a gay man, an immigrant, who lived his life unapologetically himself," Malek said, calling the film proof that "we're longing for stories like this. I'm the son of immigrants from Egypt. I'm a first-generation American. Part of my story is being written right now and I could not be more grateful...for this moment. It is something that I will treasure for the rest of my life."

He concluded with a few words for his girlfriend and co-star, "Lucy Boyton, you're the heart of this film. You're beyond immensely talented. You have captured my heart."

Streisand received a standing ovation as she stepped out to introduce Best Picture nominee BlacKkKlansman. "It was so funny, so real, and yet, so horrifying. It was based on the truth, and the truth is so precious these days." After tweeting her praise for the film, Streisand recalled that Lee phoned her for a conversation which came "very easy, because we were both raised in Brooklyn," which elicited a joyful shout out from the director himself.

Academy president John Bailey introduced this year's "In Memoriam" segment, which was scored by the Los Angeles Philharmonic and maestro Gustavo Dudamel. Major stars honored during the poignant segment included Margot Kidder, Neil Simon, Burt Reynolds, Penny Marshall, and Stan Lee.

Chadwick Boseman and Constance Wu dutifully honored all of this year's nominees, but we knew who was winning this one: Lady Gaga is officially an Academy Award winner. Gaga burst into tears as she hugged Bradley Cooper, then took to the stage with co-writers Marc Ronson, Anthony Rossomando and Andrew Wyatt. "If you're at home and you're sitting on your couch, all I have to say is this is hard work. I've been working for a long time," she said. "It's not about winning. What it's about is not giving up.

"Only because you can't really thank yourself," Ronson chimed in, "Lady Gaga, we salute you."

Creed co-stars Tessa Thompson and Michael B. Jordan presented the award to Ludwig Göransson, who recently won a GRAMMY for his score. (Translation: He's halfway to an EGOT in just two weeks!) The Swedish composer thanked director Ryan Coogler, who he’s been working with since their days at USC, and shared the award with the African musicians and classical performers who contributed to to the epic score.

Captain Marvel co-stars Brie Larson and Samuel L. Jackson presented the award -- though Jackson went off-script for a moment to tell Spike Lee that the Knicks won tonight -- to Brian Currie, Peter Farrelly and Nick Vallelonga for Green Book. "They say if you want to go somewhere fast, go alone, if you want to go far, go together," Farrelly told the crowd before starting in on his long list of thank you's, and Vallelonga chimed in to send a shout out to his late father. "Thank you, dad, we did it!"

Jackson then excited announced that BlacKkKlansman and Spike Lee -- or, "SPIKE LEEEEEEEEE!!!" were the Best Adapted Screenplay winners, marking Lee's first-ever competitive Academy Award win. (Lee shares the award with co-writers Charlie Wachtel, David Rabinowitz and Kevin Willmott.) Lee went on to give a powerful speech about his ancestors' journey from slavery, to his grandma paying for his college ("She called me Spikey-poo") and a call to be on "the right side of history" in the upcoming 2020 election.

Krysten Ritter and Beale Street's Kiki Layne spoke of the power of the live action shorts nominated this year, before presenting the award to Skin. "I moved here five years ago from Israel, and my grandparents are Holocaust survivors," director Guy Nattiv said. "[This short] is about teaching your kids a better way." "Oh my god!" producer Jaime Ray Newman exclaimed, dedicating the award to their infant child watching at home.

Cooper and Gaga took the stage in dramatic fashion for an intimate rendition of the film's Best Original Song-nominated hit. Gaga played piano as the pair sang to each other, bathed in golden light and starring into each other's eyes, before Cooper moved to sit next to Gaga on the piano bench for the final chords of a truly breathtaking performance. Ally and Jackson forever!

Sarah Paulson and Paul Rudd paired up to explain the power of VFX in films: "This is the kind of magic that allows the audience to believe that I was actually obliterated by a truck in Bird Box," she began. "And the same kind of magic that allows an audience to believe that I am an actor," he chimed in. Besting the likes of the Avengers and Star Wars, First Man was named as the winner, with the crew saying they "did things a little differently" on this film and thanking director Damien Chazelle and Neil Armstrong.

The actor and the renowned chef -- who has devoted the past year to providing aid to Puerto Rico in the wake of Hurricane Maria -- introduced Alfonso Cuarón’s celebrated film, which has already garnered Oscars for Best Cinematography and Best Foreign Language Film. “People of the world, each person’s life is a recipe all on its own, with different measures of joy and sadness,” Andres told the crowd “[Roma] is a tribute to the invisible people in our lives, immigrants and women, who move humanity forward!”

Awkwafina and John Mulaney celebrated their first time at the Oscars with panic attacks, banter and by presenting the award for Best Animated Short Film. "It's a big one!" Mulaney cracked. The Oscar went to Pixar's Bao. "It's our first time too," director Becky Neiman began, with Domee Shi adding, "To all the nerdy girls out there who hide behind their sketch books: don't be afraid to share your stories with the world!"

Shortly after, Rayka Zehtabchi and Melissa Berton accepted the Oscar for Best Documentary Short Subject for their film Period. End of Sentence. “I’m not crying because I’m on my period or anything,” Berton announced, “I can't believe a film about menstruation just won an an Oscar!” Zehtabchi thanked all those involved in the nonprofit organizations the film focuses on, before noting, “A period should end a sentence, not a girl’s education!”

The Wayne’s World duo joined forces again to introduce Best Picture nominee Bohemian Rhapsody, paying tribute to the iconic scene in their 1992 comedy when the characters rock out to the entirety of the six-minute track. “We’re humbled to be associated with that brilliant song,” Carvey said as the camera cut to Queen bandmember Brian May chuckling in the audience.

The newly-minted GRAMMY winner was on hand to introduce David Rawlings and Gillian Welch's live rendition of the Best Original Song nominee from The Ballad of Buster Scruggs. Backdropped by a starry evening over the canyons, the duo, donning a 10-gallon hat, cowboy boots and fully-bedazzled duds, strummed their guitars as they yodeled "When a Cowboy Trades His Spurs for Wings."

Michelle Yeoh and Pharrell Williams presented this award to Spider-Verse producers Phil Lord, Christopher Miller, Bob Persichetti, Peter Ramsey & Rodney Rothman, marking the first nomination and first win for all five producers. “There’s 800 filmmakers who pushed boundaries and took risks to make people feel powerful and seen,” Miller told the crowd. Lord noted that the inclusive message of the movie -- which centers on Miles Morales, a young hero who is half-Puerto Rican and half-African-American -- resonating with so many “makes us feel like we’ve already won.”

Daniel Craig and Charlize Theron presented the award to the Green Book actor -- his second in three years -- for his role as music pioneer Dr. Don Shirley. “Trying to capture Dr. Shirley’s essence pushed me to my ends, which is a reflection of the person he was and the life that he lived,” Ali noted, before thanking co-star Viggo Mortensen and director Peter Farrelly for their collaborative work on the film and dedicating the award to his grandmother.

Michael Keaton presented the award for editing -- which he winkingly admitted can make a performance a whole lot better, "trust me!" -- to Bohemian Rhapsody. "He just asked if I would like this," editor John Ottman held up the enveloped with his name on it. "I said my mom would love it. She's 85." As he ran through his list of people to thank, he laughed, "I'm looking at Rami looking at me [like], 'Better thank me!'"

The Daily Show host introduced Best Picture nominee Black Panther by noting that people around the world love approaching him and saying the film’s catchphrase, and took a pointed shot in the process. "Mel Gibson came up to me backstage and said 'Wakanda forever!'” Noah said. “He said another word after that, but the 'Wakanda forever' part was nice."

Keegan-Michael Key showed us his best Mary Poppins, descending from the ceiling with an umbrella to introduce "The Divine Miss M" for a performance of the nominated song from Mary Poppins Returns. Bette Midler, with nominated pal Marc Shaiman on the piano, took over for Emily Blunt singing "The Place Where the Lost Things Go" and it was, in fact, divine, ending with a rousing standing ovation from the audience.

Angela Bassett and Javier Bardem presented this award, noting, “it is truly fitting that this year, foreign language films are recognized in not only this category, but in almost every category.” Director Alfonso Cuarón accepted his second award of the night, marking the first time a Mexican film has won the category. Cuarón once again thanked his cast and his children, noting the inspiration he drew as a child from "foreign" films like Citizen Kane, Jaws and more. “We are all part of the same ocean,” he noted.

James McAvoy and Danai Gurira presented the sound editing award to John Warhurst and Nina Hartstone, and sound mixing honors to Paul Massey Tim Cavagin and John Casali, both for the Queen biopic. "This truly is an honor, especially in a category with so many amazing sounding films," Warhurst marveled as the team took the stage -- though all of the winners notably left out the film's disgraced director, Bryan Singer. “We got to work with Queen for our day job, which was an honor.”

The tennis star took the stage in a stunning garnet gown to introduce Best Picture nominee A Star Is Born. "Having the dream is easy, making it come true is hard," Williams said of the film's message that most resonated with her. "There’s the rush of fame, the pressure of success and the heartache that comes with sacrificing love for career or career for love."

Game of Thrones star Emilia Clarke introduced the song from RBG, noting that "Khaleesi has nothing on” its subject, Supreme Court Justice Ruth Bader Ginsburg. She also offered use of her dragons anytime the celebrated justice wants -- “Just ring me!” -- before Hudson took the stage.

In a stunning tuxedo ensemble with a flowing white train, she sang the first Best Original Song nominee of the night, "I'll Fight." Images of Ginsburg and civil rights protests were projected on the wall behind her during the powerful performance, which garnered an effusive round of applause from songwriter Diane Warren.

Tyler Perry presented the award for Best Cinematography not during a commercial break, but during the actual telecast -- "thank you, Academy" -- to Alfonso Cuarón, the first director to win in this category. Cuarón began by thanking his leading ladies, went on to thank his cinematography idol, Emmanuel "Chivo" Lubezki, and concluded with a shoutout to his children, Olmo and Tess, and to Mexico: "Besos!"

Jennifer Lopez and Chris Evans presented the award to Hannah Beachler -- the first-ever African-American production designer to even be nominated in the category -- and set decorator Jay Hart, who created the world of the celebrated Marvel epic. Beachler and Black Panther costume designer Ruth Carter are the second and third black women to ever win an Oscar in a category outside of Actress and Supporting Actress. "I stand here stronger than I was yesterday,” Beachler said in her emotional speech. “I stand here with agency and self worth because of Ryan Coogler...I am stronger because of Marvel, who gave me the opportunity to do my best."

McCarthy and Henry stole the show 29 minutes in, doing their best The Favourite-Mary Poppins-Black Panther-Mary, Queen of Scots mashup drag and introducing the category via a stuffed bunny. It got even better from there: Ruth E. Carter won her first Oscar for dressing the men and women of Wakanda. "I got it! This has been a long time coming," Carter said. "Spike Lee, thank you for my start. I hope this makes you proud," she continued as Lee stood up to salute her from the audience.

Eighth Grade star Elsie Fisher and Beale Street’s Stephan James presented the award to Greg Cannom, Kate Biscoe, and Patricia Dehaney, who helped transform Vice's cast into real-life politicians Dick Cheney, George W. Bush and more. "Christian Bale, you’re fantastic, you’re so great to work with and create with," Cannom said of their leading man, while Biscoe thanked Best Actress nominee Amy Adams for "bringing us some joy."

Jason Momoa and Helen Mirren presented the documentary award to Free Solo, which chronicles Alex Honnold's historic El Capitan climb. Directors Elizabeth Chai Vasarhelyi and Jimmy Chin accepted the award and earned the first bleeping of the night when Chin exclaimed, "Oh, sh-t!" Vasarhelyi went on to celebrate Honnold ("This movie would have been boring without you!") and National Geographic for believing in the vision of "women and people of color -- we only make films better."

The always-chivalrous Chris Evans lent a hand to the If Beale Street Could Talk star as she took the stage to accept her first-ever Oscar. The clearly emotional King said, "To be standing here, representing one of the greatest artists of our time, James Baldwin, is a little surreal." As she teared up, she looked to her mother in the front row. "Mom, I love you so much. Thank you for teaching me God always has been leaning in my direction."

Maya Rudolph, Tina Fey and Amy Poehler made us all wish they were this year’s hosts when they opened the “one millionth Academy Awards” by riffing on each of the year’s nominated films. “Buster Scruggs? I hardly know her!” Fey quipped, while both Rudolph and Poehler tried their hand at Lady Gaga’s epic “Shallow” riff from A Star Is Born.

With Adam Lambert standing in for late frontman Freddie Mercury, Queen opened the Oscars with a performance of "We Will Rock You" and "We Are the Champions," and the audience was thoroughly rocked: Nominees like Glenn Close, Amy Adams and Lady Gaga were all spotted singing along to the hits during the rollicking performance.

"I haven't really been able to fully process that," Gaga told ET when asked how she feels about the fact that she could walk away tonight an Oscar winner. "It's been my dream since I was a little girl to even be able to work as an actress." As for her impending performance with Bradley Cooper and any pre-show nerves he may have, she exclaimed, "Oh, Bradley's chillin'!"

Adorable duos were all over the Oscars' red carpet, from Jennifer Lopez and Alex Rodriguez to Bradley Cooper and Irina Shayk, Courtney B. Vance and Angela Bassett to Jason Momoa and Lisa Bonet, who coordinated their looks in pastel pink ensembles. "Of course!" Bonet told ET of whether she's been enjoying watching Momoa soak up the love for Aquaman. "You don't see too many brown superheroes."

"Don't look under the cape guys there's a rotisserie going on back there," Melissa McCarthy joked to ET, in reference to the now-infamous sub sandwiches she packed for the Globes. The Best Actress nominee donned a Brandon Maxwell ensemble for the evening and, while there isn't actually poultry hidden under her cape, she did say, "I feel like it's just superhero enough that it's creating a radius."

After attending a pre-Oscars bash with girlfriend Taylor Swift, Joe Alwyn opted to walk the Oscars carpet with his The Favourite co-star Nicholas Hoult. Both were dressed-down for the stag night -- at least compared to their lavish garb in the Best Picture nominee -- with Hoult in an all-black suit and Alwyn in a more traditional tux. Keep your eyes peeled for the after-parties, however, where Swift may still make an appearance.

The night's early fashion trends included metallic looks (from the likes of Awkwafina and Glenn Close) and plenty of pink: Black Panther's Angela Bassett and Green Book's Linda Cardellini all stunned in the rosy hue, while presenters Gemma Chan, Maya Rudolph and Kacey Musgraves -- fresh off her Album of the Year win at the GRAMMYs -- also donned pastel pink ensembles.

First-time nominee Yalitza Aparicio walked the Oscars carpet with her mother, celebrating a whirlwind year in which the Roma actress has received critical acclaim for her very first acting role. "I feel amazing," Aparicio told ET’s Kevin Frazier and Nancy O’Dell, via a translator. "I realize that being a teacher and being an actress can actually be quite similar. We can teach the world through this presentation and this film."

The red carpet is officially open, and Pose star Billy Porter set the fashion bar high in a velvet tuxedo gown by Christian Siriano. Feast your eyes on all of the Oscars looks in ET’s arrivals gallery and check back throughout the night to see which stars made our Best Dressed list!