Article continues below advertisementSydney Sweeney is heating up social media once again.The Euphoria star shared a sultry mirror selfie that had fans doing a double-take as she posed in delicate lace underwear inside a luxurious bathroom. Keeping things natural and effortless, Sweeney appeared makeup-free in the steamy snap while still managing to turn heads.Article continues below advertisementSource: @sydney_sweeney/InstagramSydney Sweeney shared a sultry mirror selfie while posing in lace underwear and a cropped cardigan.