Sorry Kourt, Khloe, and Kylie – Kim Kardashian is back and better than ever in a skimpy bikini

Looking perfect: Kim Kardashian wore a bikini when lounging by the pool in Costa Rica on Saturday afternoonNot too much fabric: The 36-year-old had on a skimpy flesh-colored two pieceNot covered: The E! queen wore a thong style bikini bottom that exposed her backside