Rachel Weisz heated things up in Spain today in an ultra flattering red taffeta Prada dress (and Prada shoes too) for the Madrid premiere of her new film "Agora." And while I still adore the leopard print Louis Vuitton shift dress Weisz wore a few years ago to celebrate her Gotham magazine cover (in fact, it reminds of this Work to Weekend leopard dress), today's strapless style and the brighter blue-ish red shade flatters her dark hair and fair complexion better.

Photos: Carlos Alvarez/Getty; Amy Sussman/Getty