Kim & Khloe Kardashian put their big butt on display in tight outfits via @iam_bobokanbai

Kim & Khloe Kardashian put their big butt on display in tight outfits via @iam_bobokanbai

And you wonder why they one of the world's most famous families. With butts like that. Hehe. The Kardashian sisters showed off their hourglass figure in tight, sexy outfits as filmed their reality show in LA yesterday