Joe Jonas & Sarah Hyland: Nylon Nightlife!

Joe Jonas gives a thumbs up as he arrives at the NYLON and Armani Exchange Private Dinner Celebrating Cover Star Mila Kunis at Cleo Restaurant at The Redbury Hotel in Los Angeles on Thursday night (December 9).

The 21-year-old musician was joined at the party by couples Sarah Hyland and Matt Prokop and Sara Paxton and Nico Tortorella.

Sarah, 21, wore a cute olive StyleStalker dress, muubaa jacket and BCBG heels.

All guests, which also included Heather Hemmens and Ashley Benson, were first to receive Armani Exchange‘s new watches from their Holiday collection.