Ryan Reynolds and Sandra Bullock Pictures at The Change-Up Premiere

The stars of The Change-Up like Ryan Reynolds, Jason Bateman, and Leslie Mann gathered in LA last night for the West Coast premiere. Olivia Wilde rounded out the cast of actors who hit the red carpet outside the Regency Village Theatre. There was a special surprise in store — Sandra Bullock, in Lanvin, made a rare appearance to support her good buddy Ryan! Jason, meanwhile, had his wife Amanda Anka on hand for the premiere and afterparty at the Hammer Museum, and Leslie was next to her husband Judd Apatow. Leslie wore Marchesa for the first part of the evening then changed into Monique Lhuillier for the bash. Olivia picked a red Antonio Berardi before putting on a star-embellished frock for the end of the night. We managed to snag a few minutes with the bold-faced names before they headed into the screening. Olivia spoke about how funny the guys were on set, while Jason and Ryan revealed that they've been friends for 15 years and have been waiting to do a project together. Stay tuned for more later today on PopSugar Rush!