The Oscars are this Sunday, and we're getting revved up for the big event by taking a look back at some of the most memorable looks from shows past. The Oscars red carpet always brings out the most glamorous, jaw-dropping (and sometimes mind-boggling) celebrity ensembles, and we can't wait to see what this year's show brings. From Gwyneth Paltrow's iconic white Tom Ford gown, to Celine Dion's statement-making backwards suit, click through to see 65 of the most unforgettable Oscars looks now.