Call it the "Sisterhood of the Celebrity Brides!" One month after her Sisterhood of the Traveling Pants costar Blake Livelytied the knot with Ryan Reynolds, Amber Tamblyn married her own celebrity funnyman, comedic actor David Cross. Tamblyn, 29, and the Arrested Development actor, 38, exchanged vows on Saturday, her rep confirmed to People. Filmmaker Lance Bangs, a wedding guest, posted a photo of the couple dancing at their reception, "Yo La Tengo playing Superchunk, Mission of Burma, and Pixies covers at David and Amber's wedding," he wrote on Instagram. In addition to the band Yo La Tengo, sources tell People the deejay was none other than The Roots' Questlove.