"My real name is Emily, but I wanted to be called Emma because of Baby Spice, and guess what?" she told Jimmy Fallon on The Tonight Show Thursday night. She appeared on the show to promote her movie The Favourite , in which she plays a servant named Abigail who charms the queen (Olivia Colman) . She later clarified that the name changed wasn't specifically due to the Spice Girls, but, in 2nd grade, she did ask the teacher to call her "Emma" because of Emma Lee Bunton. The real question is here is why Stone didn't choose to go by "Baby Spice," a considerably bolder choice than Emma. But you can't change the past — or so I've been told.