We’re sure plenty of girls would battle it out to give Kellan Lutz a birthday smacker, but not his girlfriend AnnaLynne McCord.

The ‘Twilight’ hunk celebrated turning 25 with a bash at his Los Angeles house for close friends and family, but the ‘Beverly Hills 90210’ beauty was nowhere to be seen.

Unfortunately for Kel, the actress, who he’s been dating on and off for the past few months, was tied up with work commitments in Cambodia.

“It was just his close friends and family,” a source tells E! Online. “They had a BBQ and drinks and asked guests to bring something, too.”

And to top it all off, his nearest and dearest even had a birthday cake designed that paid homage to his unforgettable Calvin Klein underpants ad!

The actor has been making the most of his celebrations, starting the party early last weekend with some help form his ‘Twilight’ co-star Ashley Greene.

The pair hit Hollywood hotspot Coc de Ville with a group of friends, knocking back plenty of champagne and vodka.

Happy Birthday Kellan!

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