'The Fosters' Wedding Is Tonight!

The cast of The Fosters celebrates in this new still from tonight’s all-new episode.

In “I Do,” Stef (Teri Polo) and Lena (Sherri Saum) try to maintain calm when their parents descend on the Foster house for a very special celebration. Lena’s dad, Stewart (Stephen Collins), has agreed to officiate the ceremony while her mother Dana (Lorraine Toussaint) and Stef’s colorful, talkative mom Sharon (Annie Potts), attempt to keep things civil while disagreeing on floral arrangements. Sharon tries to strong-arm Frank (Sam McMurray) into attending. Stef avoids telling Lena she plans to return to work as soon as she is cleared.

Meanwhile, when Callie’s (Maia Mitchell) case against Liam (Brandon Jones) boils down to her word against his, she must decide whether or not to lie in order to get some justice out of the situation. Callie and Jude (Hayden Byerly) get some news they’ve been hoping for, but Callie makes an emotional slip that could destroy any chance they finally have at happiness.

“I Do” airs TONIGHT @ 9PM ET/PT on ABC Family. 15+ pics inside…