Kourtney Kardashian looks amazing in a bikini after having a baby..but she is still no match for her sister Kim’s bootylicious backside.

Download more celebrity bikini pictures and videos here.

These might be the worst set of Kim Kardashian bikini pictures we’ve ever seen. There’s not much boobage and even less ass.

Download more celebrity bikini pictures and videos here.

Miami is lousy with hot celebrities this week. Of course the Kardashian sisters seem to almost have a permanent residence there these days.

Download more celebrity bikini pictures and videos here.

Kim Kardashian on a working vacation in Costa Rica this week. She loves to twitter bikini pictures of herself so hopefully we’ll see many more.

Download more celebrity bikini pictures and videos here.

Kim Kardashian is so proud of her new, slimmer figure that she is twittering un-airbrushed bikini proofs. Now that is body confidence.

Download more celebrity bikini pictures and videos here.

Kim Kardashian is popping up in lots of sexy new shots this week.  Her fear of being overshadowed by her sisters having babies and getting married has prompted Kim to do what she does best…show off those curves.

Download more celebrity bikini pictures and videos here.

Kim Kardashian has changed her lifestyle. Instead of partying with Paris Hilton she is filming workout DVD’s and selling diet pills. It’s paying off, she is losing her trademark giant ass and looking good in a bikini.

Download more celebrity bikini pictures and videos here.

Kim Kardashian poses for a sexy and sticky bikini promo ad for the diet pill Quick Trim. She claims these are the un-touched originals and they are pretty hot.

Download more celebrity bikini pictures and videos here.

Kim Kardashian looks great in this Twitter picture she leaked today.

Download more celebrity bikini pictures and videos here.