Kellan Lutz headed to Las Vegas over the weekend to celebrate his 26th birthday with his brother Brandon. The Lutzes assembled on Saturday night at Pure nightclub to party and cut cake in honor of Kellan's big day, which is actually tomorrow. This time during 2010, Kellan was in LA toasting another year with Ashley Greene. The Lutz family gathering came during a hiatus for Kellan from shooting Breaking Dawn with his Twilight buddies in Canada. He went North to Vancouver under two weeks ago, logging some quality time on set ahead of his latest milestone.