VIDEO: Sneak Peek - It's The Wedding of the Year on Season Finale of GREY'S ANATOMY

On the Season Finale of GREY'S ANTOMY titled "Family Affair," Meredith and Maggie support Amelia on an important day; Jo reveals that she has been keeping secrets from Alex while Arizona and Callie deal with the impact of their custody arrangement. Meanwhile, Ben leaps into action to help a friend. The Season Finale airs Thursday, May 19th on ABC. Get a sneak peek below!

Recipient of the 2007 Golden Globe Award for Best Drama Television Series and nominated for multiple Emmys, including Outstanding Drama Series, "Grey's Anatomy" is considered one of the great television shows of our time. The high-intensity medical drama, now in its twelfth season, follows the personal and professional lives of a group of doctors at Seattle's Grey Sloan Memorial Hospital.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Kevin McKidd as Owen Hunt, Jessica Capshaw as Arizona Robbins, Jesse Williams as Jackson Avery, Sarah Drew as April Kepner, Caterina Scorsone as Amelia Shepherd, Camilla Luddington as Jo Wilson, Jerrika Hinton as Stephanie Edwards, Kelly McCreary as Maggie Pierce and Jason George as Ben Warren.