Of all the red carpets of awards season, stars tend to let their freak flags fly highest at the Grammys. Last year brought us Pharrell’s infamous hat, Madonna and her son David in matching tuxes, and Katy Perry’s sheet-music gown. By now, we know to expect glitter for days, tons of leather, and more than one Saint Laurent look. But who will show up in their underwear or a bathrobe? Click through our slideshow and keep checking back for live coverage throughout the night.