Article continues below advertisementHalle Berry bared her backside in an age-defying vacation snap.The actress, 59, stunned in a cheeky bikini as she posed from behind on Sunday, September 28.Berry exposed her butt in a black-and-white two-piece from Monday Swimwear while strolling among rocks.Article continues below advertisementSource: @halleberry/InstagramHalle Berry exposed her butt in a tiny thong."Looks like I'm going the wrong way, but I'm not...just going my own way !" she captioned her post.Fans flattered the 59-year-old in the comments section.