Kellan Lutz stuck by girlfriend AnnaLynne McCord's side on Saturday to celebrate her 23rd birthday at Las Vegas's MGM Grand. The couple, who are back in the US after a trip to Germany, posed together on the blue carpet before heading over to the pool, where Kellan went shirtless and sipped a Bud Light. AnnaLynne, meanwhile, put on a bikini to dance with her sister Angel.
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