And her hard work is paying off. Kim looked amazing while attending a private dinner following the Daily Front Row Fashion Los Angeles Awards at Mr Chow restaurant in Beverly Hills, California, on Sunday night, sporting a black sequin Calvin Klein gown and Tom Ford heels.
Kim enjoyed a date night with her husband, 38-year-old rapper Kanye West, who posed for a photo with his wife.
The stylish couple hung out with the fashion elite at the event, including former editor-in-chief of Vogue Paris, Carine Roitfeld, photographer Mert Alas, and former Lanvin designer Alber Elbaz.
"Love you, Kim," Roitfeld says in Kim's Snapchat video, while the Keeping Up With the Kardashians star kisses the 61-year-old fashion icon on the cheek.
But our favorite part of the night has to be Kim catching Kanye rapping Warren G's classic 1994 hit, "Regulate," in the car, which she also posted on Snapchat.
Kim has made it clear that losing the baby weight from her second pregnancy was a priority this year, putting it at the top of her list when it came to her New Year's resolutions. She's also been open about gaining 60 pounds while pregnant with son Saint, and wanting to lose an additional 10 pounds that she's "gained the last few years."
But by mid-January, Kim was already down an impressive 30 pounds, and tweeted that she was teaming up with Atkins to lose another 40 pounds. It's the same diet she used after giving birth to her daughter, North, in June 2013.
"This is going to be soooo f**king hard," she tweeted. "But I can do it and I can't wait to share it all with you! #BeastMode #WhosWithMe ?!?!?!"