Last Night's Look: Love It or Leave It?We can't stop oohing and ahhing over Miley Cyrus's patchwork leather dress, Rachel McAdams's lavender gown and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

LILY COLLINS

We're used to seeing crop tops with high-waisted skirts, but Lily "Amazing Abs" Collins (that's our new nickname for her) pairs the tank with a low-slung pleated, ankle-grazing leather skirt and animal-print pumps for her Seventeen magazine cover party in N.Y.C