Showing off the curves that helped make her a celebrity, Kim Kardashian has been chilling in Mexico with her sister Kourtney. Despite some critics fatshaming her for flaunting her motherly 36-year-old body on the beach, Mrs West went one step further. She put a thong on.

You look so amazing Keeks 😍😍🍑👅💦 @kimkardashian #kimkardashian #kimkardashianwest

A post shared by KIM KARDASHIAN WEST (@kimberlystouch) on

She put her apparently surgically enhanced bum was on display Monday. Glamour Magazine reports she and some friends have been celebrating Kourtney's 38th anniversary -- which was on April 18.

Some observers have suggested the thong was in response to the backlash she suffered Monday. The most famous Kardashian was spotted on the Mexican beach wearing a bikini that showed her cellulite and imperfect body.

Many users lampooned Kim K over social media. She was "unbothered" though. On Twitter, she later posted a snap of herself eating ice cream in defiance.