Kourtney Kardashian Bares Her Badonk in High-Waist Thong Bikini

Taking full advantage of swim season.

Kourtney Kardashian shows off her pert derriere in a racy thong bikini on a night swim

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian flaunts her butt in thong

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian shows off her pert derriere in a racy thong bikini on a night swim

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian displays her body in a skimpy bikini

PHOTOS] See Kourtney Kardashian's Butt In A Thong Bikini!

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian displays her body in a skimpy bikini

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian shows off incredible bum in thong-style bikini as she joins new boyfriend Younes and scantily-clad Kendall Jenner on a yacht in Cannes

Kourtney Kardashian Bares Her Butt on Mexican Vacation – Plus More Stars in Sizzling Swimwear

Kourtney Kardashian Bikini Photos: Her Sexiest Swimsuit Pics