Emmy Rossum & Hailee Steinfeld: #DKNY25 Birthday Bash!

Emmy Rossum is a golden gal while attending the #DKNY25 Birthday Bash held during Mercedes-Benz Fashion Week Spring 2014 on Monday evening (September 9) at 23 Wall Street in New York City.

The 26-year-old actress was joined at the event by Hailee Steinfeld and Rita Ora, who performed during the event that evening.

PHOTOS: Check out the latest pics of Emmy Rossum

“I may have just been convinced by @ritaora to twerk on stage w her @karliekloss @joansmalls and @IGGYAZALEA. Hope mom doesn’t see. #dkny25,” Emmy tweeted. “Got home and told my mom I twerked. She said, ‘Did you throw your back out?!’”

FYI: Emmy is wearing House of Lavande Vintage earrings.

30+ pictures inside of Emmy Rossum and others at the birthday bash…