A scene from the May 2, 2013 episode of Grey's Anatomy, entitled "Do You Believe in Magic?"

Another scene from the May 2, 2013 episode of Grey's Anatomy, "Do You Believe in Magic?"

Guest star Hilarie Burton in a scene from the May 2, 2013 episode of Grey's Anatomy, "Do You Believe in Magic?"

A scene from the May 2, 2013 episode of Grey's Anatomy, "Do You Believe in Magic?"

Guest star Hilarie Burton in a scene from the May 2, 2013 episode of Grey's Anatomy.

Calzona in a scene from the May 2, 2013 episode of Grey's Anatomy.

Callie pops in in a scene from the May 2, 2013 episode of Grey's Anatomy.

Hilarie Burton guest stars in a scene from the May 2, 2013 episode of Grey's Anatomy.

Arizona and Callie in a scene from the May 2, 2013 episode of Grey's Anatomy.

AZ in bed in a scene from the May 2, 2013 episode of Grey's Anatomy.

Miranda in crisis mode in a scene from the May 2, 2013 episode of Grey's Anatomy.

Richard in a scene from the May 2, 2013 episode of Grey's Anatomy.