Pop star/actress Mandy Moore is swapping Scrubs for Grey's Anatomy - she's joining the cast of the hit medical drama for a guest appearance this year.

The 26 year old appeared in the hospital comedy Scrubs in 2006, playing a love interest for Zach Braff's character.

Moore will head back to the hospital this year to take part in the two-hour season finale of Grey's Anatomy, according to TVguide.com.

The website reports that the singer will play a patient in the upcoming episode, which is due to air on May 20th.