Alex Pettyfer & Dianna Agron: 'I Am Number Four' Premiere!

Alex Pettyfer and on-and-off-screen girlfriend Dianna Agron attend the premiere of their film I Am Number Four held at the Village Theatre on Wednesday (February 9) in Westwood, Calif.

I Am Number Four is about “John, an extraordinary teen (Pettyfer), masking his true identity and passing as a typical high school student to elude a deadly enemy seeking to destroy him. Three like him have already been killed … he is Number Four.”

Dianna plays Sarah Hart, a former popular girl, who falls for John.

I Am Number Four hits theaters on February 18!

FYI: Dianna is wearing a Vivienne Westwood dress, Brian Atwood shoes, Fred Leighton jewels, and a VBH bag. Alex is wearing a Polo Ralph Lauren pinstripe 3-piece suit.

15+ pictures inside of Alex Pettyfer and Dianna Agron premiering their film…