With news that Carrie Fisher’s daughter, Billie Lourd was going to appear in Star Wars: The Force Awakens, many people assumed that she would be taking on the role of Young Leia. I have yet to see a “flashback” sequence on Star Wars, but I could be wrong. I don’t think she’s playing Young Leia at all. But you can see her with a blue droid below.
Here’s a picture of Carrie Fisher when she was younger and a picture of her daughter (courtesy of People Magazine) so you can compare the two.