The 22-year-old singer turned heads on the red carpet at Grammy awards wearing a seductive Alexandre Vauthier cut-out gown. The Bangerz artist left no room for underwear in the backless design. She went bra-less showing off her bare back with only delicate strings elegantly holding her ensemble together. She finished her look by keeping the no make-up look with drop earrings and bling ring. Shop her look here!