Justin Timberlake and Mila Kunis stepped out for the NYC premiere of Friends With Benefits at the Ziegfeld Theater tonight. Mila was back in a sexy red dress after donning the fiery color for an appearance on The Today Show with Justin this morning. She changed into a gray Roland Mouret number to sit down with Jimmy Fallon this evening before hitting the red carpet with her costar. Emma Stone was also on hand for the event and she posed with Mila on her way into the screening. It's been a busy month for Mila and Justin, who have been promoting their movie with a spread in Elle, a trip to Mexico, and a press junket.