Alex Pettyfer: Beach Boy in Miami!

Alex Pettyfer teases his buff bod as he heads back from a day at the beach in Miami on Thursday afternoon (February 3).

The 20-year-old actor shot down rumors that he was engaged to I Am Number Four costar Dianna Agron.

Sources told JustJaredJr.com, “It’s not true. They’re very happy together but they’re not engaged.”

I Am Number Four hits theaters in two weeks – February 18th!