Demi has served as a sort of Topshop ambassador for awhile now, but her latest look isn't receiving top marks. The performer hit the red carpet at 102.7 KIIS FM's Wango Tango 2013 concert in Carson, California on Saturday in an all-black ensemble. She combined an incredibly sheer tie-dye tunic by Raquel Allegra with a black bralette, a pair of Topshop Disco treggings and Saint Laurent Janis pumps with studded heel. Demi also piled on the accessories, including black necklaces and a large cocktail ring.While we actually like those $40 Topshop treggings and that truly funky hairstyle, the rest of her outfit is way too over-the-top even for concert attire. What are your thoughts on Demi's revealing look?