Dax Shepard and Kristen Bell were together last night to take in a movie at the Cinerama Dome in LA. The engaged duo have been enjoying a few low-key weeks together in California, but fans could be forgiven for thinking something big had transpired in their lives — Kristen referred to Dax as her husband on Twitter despite not yet tying the knot. Kristen said she actually wants a very small wedding, and isn't going overboard planning for the big day. Kristen did, though, act like a big spender during a prefilm trip to Costco. She tweeted a photo of one of her purchases and wrote, "A day at Costco often leads to months of regret."