Hey, at least Rumer is wearing panties.
Up top, Rumer's choice for ELLE's 5th Annual Women In Music Concert Celebration is fairly conservative, then she mixes it up midway with a cropped top bare midriff. And then...there's the rest of it, with two (unfortunate) huge cutouts at the thigh, showing off plenty 'o sidebutt.
One slight twist to the side and...bam! Pink underwear for all to see. Well, you certainly got our attention, Rumer.