Kim Kardashian is one hot mama! The KUWTK star was on mommy duty while on vacation with her look-alike kids North and Saint — but all eyes were on her hard-earned bikini body!

Wearing a nude string two-piece, the 35-year-old and her toned booty strolled along the Mexican beach with her eight-month-old son and her mini-me Nori, 3, who was wearing a matching swimsuit.

However, noticeably missing from the family pics was dad Kanye West.

Click through the slideshow for more of the Kardashian-Wests on vacay!