Grey's Anatomy Callie and Arizona Wedding Pictures

Grey's Anatomy kicked off its seventh season with Owen and Cristina's wedding, and there's another set of nuptials just around the corner before it comes to a close. Callie and Arizona will slip into white gowns on tonight's episode, though apparently their big day doesn't exactly go off without a hitch. We'll have to sit tight before we get more details, but there are a few things to garner from these sneak peek photos: namely, that Bailey will be officiating. Check 'em out!

Photos copyright 2011 ABC, Inc.