Kellan Lutz acted as a groomsman in his brother Brandon's wedding in Valencia, CA, on Saturday. The Twilight star was decked out in a suit and yellow tie to match the bridesmaid dresses on the gorgeous, sunny weekend. Kellan wrapped filming on Breaking Dawn just in time to fulfill his duties in Brandon's big day. With the royal wedding excitement on Saturday, Brandon joked on Twitter about honeymooning with William and Kate. Kellan had on-again girlfriend AnnaLynne as his date for the afternoon, and she looked lovely in a pale pink dress. AnnaLynne is finished shooting 90210 for the season, and the two are making things work, though he rarely leaves much free time between projects. Earlier on Saturday, Kellan perfected his glow with a shirtless skateboard down the Venice beach boardwalk, so he was ready for all the photo ops with family.