Must-See Celeb Sightings: September 9-15, 2019

Broadway, baby! The Fenty fashion designer donned an entire pastel look from her line to take in Slave Play in New York City on Sept. 15.

BFFs at the Emmys! The Queer Eye stars embraced at Netflix's 2019 Creative Arts Emmy Awards after-party at Hotel Figueroa in Los Angeles on Sept. 15.

The "Bad Guy" singer was flying high during her Music Midtown 2019 set in Atlanta's Piedmont Park on Sept. 15.

The fashion designer hit the runway at her London Fashion Week show at the British Foreign and Commonwealth Office on Sept. 15.

Hang ten! The super-fit actor flashed a huge smile at the 33rd Annual Nautica Malibu Triathlon in Malibu, California, on Sept. 15. Eastwood is a regular at the annual fundraising event, which raises money for the Children's Hospital Los Angeles.

The actress kept a coffee in hand as she hit up a farmers market in Los Angeles on Sept. 15.

The stars of Downton Abbey discuss bringing their drama to the big screen during a 92Y talk in New York City on Sept. 15.

The pop star put on a red-hot performance at the Virgin Voyages and Gareth Pugh collaboration launch party at the Royal Opera House in London on Sept. 15.

Plaid perfection! The Bumblebee star showed off her long legs in an off-the-shoulder, black-and-white bell-sleeved dress and thigh-high black boots as she headed into a Tribeca Film Festival event in New York City on Sept. 14.

Reppin' the Bronx! Sporting a fashion-forward New York Yankees hat, J.Lo celebrated the success of her new movie, Hustlers, with dinner at Papi Steak in Miami Beach on Sept. 14.

The blonde beauties were twinning in black tees and distressed denim as they grabbed lunch in Los Angeles on Sept. 14.

The prolific funny man and his wife were affable hosts at their Hilarity For Charity's County Fair at The Row in Los Angeles on Sept. 14.

Sticking together! The Queer Eye five couldn't have looked chicer when they hit the red carpet for day one of the 2019 Creative Arts Emmy Awards in Los Angeles on Sept. 14.

The supermodel strutted her stuff on the Fashion for Relief runway during London Fashion Week in England on Sept. 14.

You glow girl! The "Redesigning Women" songstress wowed the crowd at Kaaboo 2019 in Del Mar, California, on Sept. 13.

The Halloween star humbly accepted the Best Actress statuette at the 2019 Saturn Awards in Los Angeles on Sept. 13.

The "It All Comes Out in the Wash" singer kicked off her Roadside Bars and Pink Guitars Tour at the Mohegan Sun Arena in Uncasville, Connecticut, on Sept. 13. The first evening of her two-night stand included special appearances from Elle King, Caylee Hammack and Lambert’s band, the Pistol Annies.

Stars and stripes forever! The Charlie's Angels star revealed her cabin sign along the Promenade des Planches during the 45th Deauville American Film Festival in France on Sept. 13. Stewart even wore a red, white and blue button-up that matched the American flag that had been draped on the railing.

The Misery Index stars goofed around at the TBS portion of the Paley Center for Media's 2019 PaleyFest Fall TV Previews in Beverly Hills on Sept. 13.

Did the Hustlers star deserve to sit on a throne on the Miami set of Telemundo's Un Nuevo Dia and have a hearty laugh? Yes, yes she did.

The "With You" singer snapped a selfie with a fan eagerly awaiting Trainor's Today show performance at New York City's Rockefeller Plaza on Sept. 13.

One proud Aussie! The actor-singer was awarded the Order of Australia at the Government House in Melbourne on Sept. 13.

The Younger star was all about the '70s vibes as she hit the streets of Los Angeles on Sept. 13.

Only ET was invited into Siriano’s New York City showroom on Sept. 13, where he and Nash sipped on Sterling Vineyards wine while designing the Emmy nominee's awards show dress.

Happy anniversary! One year after marrying Justin Bieber in a secret ceremony, the 22-year-old model was spotted heading out to lunch with a friend in Beverly Hills on Sept. 13.

The star lounged around the Ellen DeGeneres Show set during his Sept. 13.

Bow down to these queens! The duo bonded at Rihanna's 5th Annual Diamond Ball, benefiting the Clara Lionel Foundation, at NYC's Cipriani Wall Street on Sept. 12. "I'm really proud of the fact that people come back year after year," Rihanna told ET. "I'm also really proud of the fact that we have a lot of newcomers every year, people that believe in it, so it's just not the core foundation of people that believe in the cause, but they're people who fall in love with what we're doing and they want to join the team."

Stunning in a black Tom Ford velvet bustier gown with satin bow detail, Cabello was honored at Save the Children’s The Centennial Gala: Changing the World for Children in New York City on Sept. 12.

So bright! The mom of three ceremoniously lit New York City's famed Empire State Building on Sept. 12 in honor of Save the Children's 100th anniversary.

The Keeping Up With the Kardashians star puckered up to her pal at a dinner celebrating launch of KKW Beauty's collab with Winnie Harlow at L'Avenue in Saks Fifth Avenue in New York City on Sept. 12.

In New York for fashion week events, the "IDGAF" singer laughed with pals as they walked around the city on Sept. 12.

The face of Gabrielle Chanel Essence looked chic at a celebratory dinner for her new fragrance campaign at Los Angeles' Chateau Marmont on Sept. 12.

The Duchess of Sussex looked super chic in her first post-baby public appearance in London on Sept. 12.

Peace out! The star of The I-Land flashed her sign of approval to photogs as she headed onto the Today show set in NYC on Sept. 12.

The "Wolves" singer was one chic lady in an all-black look punctuated with a crocodile skin purse as she met a friend for lunch in Los Angeles on Sept. 12.

Clad in turquoise athleisure wear on Sept. 12, the Hustlers star went makeup-free for her trip to the gym in Miami.

The mom of three hit the streets of West Hollywood in on-trend cargo pants on Sept. 12.

The co-stars cracked up while attempting to cut a giant wedding cake at the Los Angeles premiere after-party for their new movie, The Wedding Year, on Sept. 12.

Big hugs from Harry! Students at Lealands High School in Luton, England, were very excited to meet the Duke of Sussex when he checked out the Rugby Football Union All Schools Programme on Sept. 12.

If the Matrix needs a reality star, we know where they should look! Kardashian West strutted her stuff in an all-leather look in New York City on Sept. 12.

The sweet couple held hands as they walked the red carpet at the Paley Center for Media in New York City on Sept. 12, where Douglas was honored at a luncheon.

Smile pretty! The "Cry Pretty" star flashed a huge grin as she stood by host McCarthy's side at SiriusXM's Town Hall with Underwood in Los Angeles on Sept. 11. 

The Lucy in the Sky stars both dazzled in black gowns at the premiere of their new film at the Toronto International Film Festival on Sept. 11.

The American Woman actress proudly revealed her personalized beach closet entrance at the 45th Deauville American Film Festival in France on Sept. 11.

Guten tag! Thorne turned heads during the Oldenburg International Film Festival's opening gala in Germany on Sept. 11.

Shining bright! The "New Light" singer hit the stage in San Diego on Sept. 11.

The sisters were in sync as they left the Marc Jacobs Spring/Summer 2020 show at NYC's Park Avenue Armory during New York Fashion Week on Sept. 11.

The Euphoria star made a fashionable entrance into the same NYFW show.

J.Lo's good mood was infectious as she headed out of ABC's New York City studios on Sept. 11.

New York Fashion Week may have been going on, but it was the streets of Manhattan that were the reality star's runway as she slinked out of her hotel on Sept. 11.

The Ad Astra star appeared to be in a good mood after landing at Narita International Airport in Japan on Sept. 11.

The "Ants Marching" crooner sang his heart out at The Garage, SiriusXM's newly expanded Los Angeles studios, on Sept. 11, performing an acoustic set that aired on his Dave Matthews Band Radio channel.

Hold the phone(s)! Repping his non-profit, Invictus, the Duke of Sussex answered calls during BGC Charity Day at One Churchill Place in London on Sept. 11.

In the nude -- hues, that is! The 36-year-old actress added a pop of color to her neutral ensemble with a red lip when she stopped by the AOL Build studio in New York City on Sept. 11.

The ladies cracked each other up on the America's Got Talent red carpet in Hollywood on Sept. 10.

The Dawson's Creek alum couldn't stop smiling while out to lunch in New York City on Sept. 10.

The "Old Town Road" singer paid a surprise visit to his old high school during a Hot 107.9 Pep Rally in Lithia Springs, Georgia, on Sept. 10.

Any way you slice it, she's got a piece of our hearts! The Fam star sported a tee that read "love you to pizzas" as she left a West Hollywood gym on Sept. 10.

The celebrated actress and gender equality activist was the star of the show at the 45th Deauville American Film Festival in France, where she was honored with a tribute on Sept. 10.

Bow down! The "All the Ways" singer was pastel perfection as she held onto a giant lavender bow tie at the Christian Cowan's Spring/Summer 2020 show during New York Fashion Week on Sept. 10, which featured looks from the fashion designer's ASOS DESIGN collaboration.

The brunette beauty looked lovely in a lace LBD and Pomellato jewels at the Mexico City premiere of Netflix's Monarca on Sept. 10.

The "We Can't Stop" singer and her rumored girlfriend were photographed in coordinating black ensembles as they headed out for a date night in New York City on Sept. 10.

The "We Were Like" singer surprised fans at Nashville's Bridgestone Arena, hopping on stage to sing "Meant to Be" during Rexha's opening set on the Jonas Brothers' Happiness Begins Tour on Sept. 10. 

The Black Panther star donned the perfect fall attire while sitting front row at the Coach 1941 show in New York City on Sept. 10. For even more pics from New York Fashion Week, click here. 

The California native sashayed into the Barclays Center in Brooklyn on Sept. 10, where Rihanna was putting on her Fenty show during New York Fashion Week.

Reeves greeted fans at the Tokyo premiere of John Wick: Chapter 3 - Parabellum on Sept. 10.

The gorgeous gals both opted for cut-out dresses at the Mosaic Federation Gala Against Human Slavery at Cipriani 42nd Street in New York City on Sept. 10.

The 22-year-old model, who's in the middle of planning a large wedding soiree with husband Justin Bieber, was spotted leaving celeb party planner Mindy Weiss' Beverly Hills office on Sept. 10 while rocking a black strapless bodysuit, stonewash mom jeans and strappy sandals.

'80s stonewash denim got a modern spin in this Balmain ensemble that Lopez fiercely rocked at Alexander Wang and STXfilms’ special screening of Hustlers in New York City on Sept. 10.

The music legends came together for a performance at a Spotify and AmericanaFest event at Nashville's Cannery Ballroom on Sept. 10.

The Hadid sisters had fun hanging with their tennis pro pal at the launch of YouTube.com/Fashion in New York City on Sept. 9.

The 23-year-old model sported a blazer dress and knee-high boots as she left her New York City hotel en route to DKNY's 30th anniversary event on Sept. 9.

Çhatty Kelly! The new talk-show host popped by SiriusXM's Andy Cohen Live on Sept. 9 to chat about her new music and the possibility of dueting with her American Idol pal and From Justin to Kelly co-star, Justin Guarini.

The 40-year-old actress had a huge grin on her face as she made her way back to her New York City home on Sept. 9.

The Hustlers star greeted fans from atop of a double-decker bus while promoting her new movie around New York City on Sept. 9.

The engaged couple had one sunshiny day, smiling wide after a New York City outing on Sept. 9 that included lunch at Pete's Tavern, massages and matcha drinks.

The Downton Abbey ladies looked lovely at the world premiere of their upcoming movie in London on Sept. 9.

The fashionista got a case of the giggles as she and her husband left their lunch date at Restoration Hardware in New York City on Sept. 9.

The "Dancing With a Stranger" singer popped by Bauer Radio Studios in London on Sept. 9.

The mom of four looked crazy comfy yet fashion-forward in a sumptiouos silk ensemble while out and about in New York City's SoHo neighborhood on Sept. 9.

The 23-time Grand Slam Champion proudly posed with her Wheaties box at a New York Fashion Week event at NYC's Spring Studios on Sept. 9.

The "You Need to Calm Down" singer took a moment to appreciate her fans during her intimiage Lenovo Presents: The City of Lover concert at L'Olympia in Paris on Sept. 9.

Clad in a red DKNY jumpsuit and white Hoka One One x Engineered Garments sneakers on Sept. 8, Harlow took a break from New York Fashion Week craziness to pet a pup she met on her walk through Manhattan.