Kim Kardashian's ass has been noticeably absent for months ... but Costa Rica brought it out of hiding.
Kim was poolside with Khloe Saturday during the family's vacation soaking up some sun.
Welcome back.
See also
Kim Kardashian and Kanye West's Mansion Finally Looking Like a Home (PHOTO GALLERY)
Kim Kardashian, Kendall All Gussied Up for 'Ocean's Eight' (PHOTO)
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