So that's her secret! Kylie Jenner flashes spanx as wind flips her dress

 Kylie Jenner Spanx underneath her sundress was revealed as a gust of wind flipped her dress.

Though the 20 year old star often poses in racy underwear on Instagram, but it seems in reality she prefers control pants just as much as her big sister Kim Kardashian.

Image: Daddy/X17online.com