Celebs You Totally Forgot Guest-Starred on 'Grey's Anatomy'

Keke Palmer

Season: 10
The Hustlers actress played Sheryll Jeffries, a young pregnant girl who needs a heart transplant and wants to partake in Cristina Yang’s trial. Cristina denies her a spot because of her age, and she gives birth prematurely.

Jamie Chung

Season: 7
The Gifted actress played newlywed Trina Paiz, who falls into a ravine during her honeymoon. She and her critically injured husband both survive.