AceShowbiz -

Kim Kardashian and Kourtney Kardashian are currently enjoying a girls-only getaway in Mexico and Puerto Rico while celebrating Kourtney's 38th birthday. The sisters are surely having the time of their lives as they hit some private beaches while flaunting their enviable figures in barely-there bikinis. Though Kim and Kourtney are super close and supporting each other, the 36-year-old socialite reportedly envies all the attention Kourtney gets for her beach body.

"Kourtney's getting so many compliments on her body and Kim feels like she's getting nothing but hate," a source tells HollywoodLife.com. "She can't help but feel jealous." It was previously reported that Kim received backlash after she was photographed in a skimpy bikini, looking totally unretouched. She later fired back at haters, writing on Twitter that she's "just sitting on the beach with my flawless body."

Though Kim feels a little bit jealous of Kourtney's curves, the wife of Kanye West is "so happy" for her elder sister. "This whole trip was about making her feel good, and it's been a total success," the source continues. "But all the body shaming Kim's been getting over her bikini pics has been hard." Kim is reportedly trying to "make a joke out of it," but it still hurts her. "It's making it hard for her to totally relax and enjoy herself," the insider adds.

Meanwhile, Kourtney is reportedly living for the attention she gets from her fans. "She is enjoying flaunting her hot body all over social media and is loving the millions of likes she is getting," a source tells the webloid, before adding that the mother-of-three also wants to make every mother feel proud of their bodies.

"She hopes she's a role model for other moms who are well into their thirties," the source continues. "She wants mothers everywhere to know: you can be sexy too!"