Credit: David Livingston/Getty Images Photo: Caterina Scorsone at the Disney ABC Television Group's Summer TCA Party on August 1, 2010

Meredith (Ellen Pompeo) and Derek (Patrick Dempsey) might want to add a new wing to the McDreamhouse!

As TV Guide reports, Shonda Rhimes and ABC are promoting Caterina Scorsone to series regular for Grey's Anatomy Season 11, meaning Derek's sister Amelia is putting down roots in Seattle.

Caterina's new full-time status is the first substantial news we've heard about Season 11, with three months or so to go before the show returns and begins its second decade on TV.

And it's a development we predicted (and started hoping for) back in April, especially since Caterina was totally game to stay on.

"I think [Shonda is] such a remarkable woman and showrunner and creative genius," the 32-year-old enthused to TV Fanatic at the time. "And I think if she wanted me to do one episode, I would do one episode, and if she wanted me to do 500 episodes, I'd do 500 episodes."

Here's hoping the show lasts that long! In any case, we're looking forward to seeing the Shepherd sibs collaborating on neuro cases.

By the way, this is the first time a character from Grey's spin-off Private Practice has been transferred to the mothership full-time.

And speaking of mothers, Caterina has a nearly-2-year-old daughter, Eliza, with her husband of five years, Rob Giles.  Guess the daycare on set just got a little more crowded, huh?

Our congrats to Caterina — we're glad she's sticking around!

Grey's Anatomy Season 11 airs this fall.

Source: TV Guide, TV Fanatic

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