Last Night's Look: Love It or Leave It?We can't stop talking about Kim Kardashian's abs-baring dress, Duchess Catherine's Jenny Packham gown and more outfits that stars were just spotted in. Check them out, then vote – fashion-forward or fashion fail?

LUPITA NYONG'O

Our style crush on the 12 Years a Slave actress is growing into a full-fledged fashion obsession thanks to gowns like this vibrant yellow J.Mendel keyhole-cutout one, selected for the Hollywood Film Awards in Beverly Hills.