A promotional photo from the May 1, 2008 episode of Grey's Anatomy, entitled "Piece of My Heart." Dr. Addison Montgomery (Kate Walsh) is back and walking alongside Miranda Bailey (Chandra Wilson). What's to come of Addie in this episode?

A photo from the May 1, 2008 episode of Grey's Anatomy, entitled "Piece of My Heart." Dr. Addison Montgomery (Kate Walsh) is back at Seattle Grace and talking to her old friend, Callie Torres (Sara Ramirez)!

A photo from the May 1, 2008 episode of Grey's Anatomy, entitled "Piece of My Heart." Addison Montgomery is back at Seattle Grace!

Seen here, Addison Shepherd poses for a picture

Addison calls him out on his crap!

Adele will be alright, although she miscarried.

Old friends treat Adele.

Everywhere Addison goes, women are carrying babies.

And a good thing, too - the surrogate mom collapsed.

Please, Mark asks?

She's pregnant! Adele!

These best buds may be seeing more of each other.