Channing Tatum and Jonah Hill took their 21 Jump Street to the SXSW festival in Austin yesterday. The guys threw on their cop uniforms for an afternoon Q&A with their costars Rob Riggle and Dave Franco, and continued wearing the getups for a p.m. premiere and afterparty. Channing made the rounds with his wife Jenna Dewan. In our recent interview with the stars, Channing said he loves Jonah more than any other previous costar, except of course Jenna, who was his leading lady in Step Up. Reviews for 21 Jump Street so far are amazing, and we'll see if it's able to top reigning box office champ The Lorax this weekend.