The 19 Biggest Kardashian Moments of 2015

The world collectively went nuts when she decided to dye her hair platinum in March.

The youngest of the Kardashian crew managed to become a magnet for controversy this year thanks to some shocking shenanigans, which included flaunting jaw-dropping cleavage and various other body parts despite her young age.

What's cuter than these pint-sized cousins becoming the ultimate BFFs this year? NOTHING.

Perhaps no Kardashian moment was more pivotal -- or important -- than the former Olympian coming out as a transgender woman during a moving two-hour interview with Diane Sawyer on April 24.

Kimye's baby boy finally arrived on Dec. 5, and he was graced with the name Saint.

In May, Kylie finally admitted that she achieved her plump pout with lip fillers.

This picture of Kendall lying down with her eyes closed while wearing a lacy dress and her hair shaped into hearts -- got a whopping 3.2 million likes, beating out social media mavens like Taylor Swift, Beyonce, and even her little sister, Kylie.

Her Vanity Fair cover, released June 1, marked the public debut of Caitlyn, who would no longer go by Bruce Jenner.

Despite his lack of public appearances, Rob's mom, Kris Jenner, revealed in an April episode of Keeping Up With the Kardashians that her only son gained 100 pounds in the last year. Even though he’s kept a low profile on social media, interest in him has remained high.

Their 9-year relationship has definitely had its ups and downs, but it was their split in July that finally appeared permanent.

Khloe appeared to be moving on from then-estranged husband Lamar Odom when she began dating NBA pro James Harden in July.

The pair stopped keeping their relationship under wraps when Kylie turned 18 in August. The 26-year-old rapper even surprised his girlfriend with a white Ferrari worth $320,000.

Kim's husband shocked everyone when he announced plans to run for president during his Video Vanguard acceptance speech at the 2015 MTV Video Music Awards on Aug. 30.

The Kardashians have always been business savvy, but they stepped it up a notch when four of the sisters launched their own apps on Sept. 14; Kourtney followed up with hers in December.

Khloe and Lamar were waiting for their divorce to be finalized earlier this year, but that changed after the NBA star was found unresponsive at the Love Ranch brothel in Crystal, Nevada, on Oct. 13.

The momager reached the milestone age of 60 on Nov. 5, and celebrated with the party to end all parties, a Great Gatsby-themed soiree at The Lot in West Hollywood, California, on Nov. 6.

The model truly made a name for herself in the fashion world this year. While she landed international covers of Vogue, her greatest accomplishment was walking in the Victoria's Secret Fashion Show on Nov. 10.

The Kardashians -- particularly Kourtney -- had a big reason to be proud of the Scott on Nov. 11, when he completed a month-long stint at a Malibu, California, rehab center. The 32-year-old reality star's latest trip to rehab -- his fourth known attempt in a year -- is believed to be his longest stay ever.

It's safe to say Khloe was never sexier than in 2015 and she let everyone know it.