Kellan Lutz's Sexy New Girlfriend Identified

Twilight's Kellan Lutz has found a new lady to sink his teeth into.

On Thursday, the hunky actor, 26, was photographed hanging out with a mystery woman -- grabbing coffee and strolling by the beach in Venice, Calif., and later hitting Lake Shrine Temple in Pacific Palisades.

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The duo kept casual in shades, t-shirts and straw hots.

A source tells Us Weekly Lutz's new love is Australian actress Sharni Vinson, who appeared in Step-Up 3D. Lutz and Vinson, 28, met through mutual friends a while ago but have been dating "for two months," the source says.

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"She's a lot of fun," the source adds. "They are both very into working out. They hang out in Venice a lot and just stay low-key."

PHOTOS: Kellan and AnnaLynne make out

Lutz dated 90210 actress AnnaLynne McCord for about two years before splitting in fall 2010; they were spotted hanging out together again in Vancouver this past April. These days, McCord, 23, has been dating Prison Break star Dominic Purcell, 41.