Photos: Kim Kardashian displays her a$$ in a yellow bikini, sans bra in Mexico

Mrs West shared a candid photo of herself and pal Joe Francis' pregnant girlfriend Abbey Wilson each showing off their greatest curves—Wilson's being her growing (and bare) baby bump that's currently housing twin baby girls and Kim's being, of course, her booty.
"#OurLovelyLadyLumps," Kim jokingly captioned the picture.
While vacationing in Mexico, the duo opted to soak in the sun's rays while enjoying the beautiful weather. Kim turned over on her stomach to get a little sunkissed on her backside, and also chose to take off her top to avoid that pesky tan line on her back.