Grey's Anatomy Season 9 is already overflowing with new characters (looking at you, interns), but there's always room for one more.

We knew Entourage's Constance Zimmer would be coming to Seattle Grace-Mercy West as Dr. Cahill, starting in Season 9, Episode 12: "Walking on a Dream." Now we have a first official look at her on the show!

In this promo photo Dr. Cahill looks very serious. We kind of dig it.

Want to know more about the character? Well, thanks to some tweets from Constance herself, we know she's in Episode 12-16, and she doesn't die, which is a legitimate concern when it comes to Grey's guest stars.

Are you excited for her character?

For more Grey’s spoilers, click here.

Catch the next new episode of Grey’s Anatomy on Thursday, January 17, 2013, at 9 p.m. ET/PT on ABC.

Source: @oczimmer, @oczimmer