AUSTIN, Texas - SXSW is officially underway. Film and TV premieres start Friday night, featuring movie stars like Blake Lively and Seth Rogen. But there are also quite a few pop-ups bringing thousands to downtown Austin.

From Blake Lively at the premiere of "Another Simple Favor" to Khalid's performance at Sips and Sounds, celebrities are taking over Austin for SXSW.

Blake Lively stepped out in two looks while at the SXSW premiere for her new film with Anna Kendrick, “Another Simple Favor.” Lively arrived to the red carpet while wearing a latex dress before shedding the short-sleeve overlay on the red carpet to reveal a corset and skirt.

Oh, you know,” Kendrick responded, seemingly in a hurry to sign autographs and take selfies with fans in Austin, Texas

Paul Feig shut down speculation that the two stars didn't get along as they all attended the film festival in Austin, Texas