Wearing his signature beanie atop his head, Matt Prokop attends the premiere of Sorority Row held at the Arclight Cinemas in Hollywood on Thursday night (September 3).

Sorority Row summary: A group of sorority sisters try to cover up the death of their house-sister after a prank gone wrong, only to be stalked by a serial killer. The thriller hits theaters NEXT Friday, September 11.

Matt missed out on a dinner with good pals Emily Osment and Jennifer Stone. The three reconnected at the Mitchel Musso concert at House of Blues last week.