Kim partied with the supermodels at Ricardo Tisci's birthday bash in Ibiza recently, and the ladies had photos taken together, in which Kate posed in a green bikini with a black mesh dress over the top. That's enough to make anyone feel a tad intimidated.
According to the Daily Mail, a source told Heat magazine: "Kim was mortified by how huge she looked next to the models. She's been raging about it, saying she felt obese and short beside these women who are half as wide, but a foot taller.
"In the pictures, you can see she was trying to hide behind them and Kanye."
The source also revealed that Kim is on an 'extreme liquid diet' to get back to her pre-baby body and her trainer, Joey Gonzalez from Barry's Bootcamp, said she has been visiting regularly.
Barry's Bootcamp is a favourite with a host of celebs, including Jessica Alba, and is famous for attempting to help its attendees burn 1,000 calories per session.
However, Kim did have a sense of humour about the Ibiza pictures and even posted one of them all together on her Instagram page, writing: "You can't sit with us."
The star has recently talked a lot about her weight woes on Twitter, writing: "Off to an intense workout. Can't seem to shake this last 15-20 lbs of baby weight. no more excuses. my baby is 1 years old! UGH."
She added: "I'm not gonna call it baby weight bc that's an excuse. I just gained weight & that's it. why is it so much harder to lose after baby though!!"
Kim? We think you look perfect just the way you are.