"What can I say? I'm the luckiest girl in the world," Ellen said. "She's officially off the market. No one else gets her."

Click through for all the details on the wedding, including who serenaded the happy couple!

These are just a few of the "Grey's Anatomy" season five secrets that show creator Shonda Rhimes spilled to E! on Thursday, including some information on the show's original couple's intimate new living situation. The show returns to ABC on September 25 at 9 PM.

"It was a real challenge to figure out how to get Meredith to the place where she was healthy enough to make this step with Derek," she told E! "Now it's really exciting to see what's going to come next and how she's going to deal with living with a boy."

In a new interview with Access Hollywood's Billy Bush, airing on "The Billy Bush Show" on Monday night, Wilson admitted she was surprised by the attention her "Grey's" co-star received after she withdrew her name from Emmy contention earlier this summer.

The four-part interview will air on Access Hollywood, Tuesday, July 8th,Wednesday, July 9th and Thursday, July 10th.