Last night in Hollywood, Elle Magazine held its 5th Annual Women In Music Celebration presented by CUSP by Neiman Marcus at the Avalon. Performances by Sarah McLachlan, Angel Haze, and Betty Who brought out some of the biz's coolest ladies, whose red carpet looks were (mostly) as on point as ever. From Sophia Bush's mod leather ensemble to an adorably pregnant Stacy Keibler in a cut-out gown, click through for our must-see looks of the night!

[Photos courtesy of Getty Images for Elle]