Last Night's Look: Love It or Leave It?Check out the head-turning outfits Katie Holmes, Jessica Chastain and more stars were just spotted in! Then decide – fabulous or fashion fail?

DEMI LOVATO

Also at L.A.'s VH1 Divas event – but looking decidedly less dramatic than Miley – the singer shines in a holiday party-perfect dress with a reverse scoop neckline and sheer beaded sleeves.