Rumer Willis is one of several stars who modeled Kim Kardashian’s Skims line in honor of the celeb-loved shapewear brand’s 1st birthday. The 32-year-old dons a leggy bodysuit and wears her long hair down in the pics — looking like the world-famous reality star’s long-lost sister.The daughter of Bruce Willis and Demi Moore posted several photos from the shoot to her Instagram feed.