Photos: Kim and Kourtney Kardashian flaunt their toned bikini bodies in Costa Rica

Although Kourtney and Kim Kardashian are back from Costa Rica, new photos of the popular Reality TV sisters relaxing by a poolside at their private Villa have emerged. Kim showed off her slender figure in a black bikini top which highlighted her sculpted arms and flat stomach, while Kourtney wore a white two-piece. See more photos after the cut.