Article continues below advertisementSydney Sweeney turned heads at the premiere of the biopic Christy, a film in which she plays the role of legendary boxer Christy Martin.The actress smoldered as her cleavage nearly busted out of her strapless, light pink Erdem gown. The waist-cinching dress draped down to the floor as she posed for photos on the Toronto International Film Festival's red carpet.Article continues below advertisementSydney Sweeney Smolders on the Red CarpetSource: megaSydney Sweeney wore a gown from Erdem.