Last Night's Look: Love It or Leave It?We can't stop talking about the outfit, Katie Holmes, Beyoncé and more stars were just spotted in! Check them out, then vote – fabulous or fashion fail?

ASHLEE SIMPSON

The Throwback Thursday Bash at L.A.'s Pink Taco was celebrating the 90s, but the singer opts for an on-trend illusion neckline red Izmaylova dress, which she teams with a black studded Devi Kroell clutch, leopard heels and a major Lizzie Fortunato statement necklace that features pearls, chains and feathers.