‘Elle’ Magazine’s “Women In Music” Concert [PHOTOS]

Elle celebrates the top women in music this month, featuring some of their favorite songstresses on a series of covers.

Last night the magazine put on their second annual Women In Music concert at Music Box in Hollywood.  Solange Knowles hit the stage to debut some new songs from her upcoming album, tweeting to fans “First show in 2 years.  Rusty bitch.”  Totally loved her retro red carpet look.

PHOTOS: Solange And Beyonce Knowles Team Up On The Red Carpet

Also at the event: Kara DioGauardi, Robyn, Hayley Williams (in L with that dress), Kate Walsh, Gillian Jacobs, JoJo, Jeremy Scott, Sofia Bush, Miranda Cosgrove, a very svelte Jordin Sparks, and Ariel Winter.