
Acting
Sierra McCormick (born October 28, 1997) is an American actress. She first became known for participating in the game show Are You Smarter Than a 5th Grader? (2007–2008) before making her acting debut with a recurring role as Lilith on the television series Supernatural (2008). She also starred as Scout Thomas on the comedy television series Romantically Challenged (2010), played Alice in the direct-to-DVD film Spooky Buddies (2011) for which she won a Young Artist Award, and Susan Kushner in the comedy film Ramona and Beezus (2010). She had her breakthrough starring as Olive Doyle on the Disn…

Killing Mary Sue
as Mary Sue

After All
as Monica

The Last Stop in Yuma County
as Sybil

Acting Out
as Sierra

The Nana Project
as Sarah

Camp
as Lily

Edge of Everything
as Abby

Exploited
as Chloe

We Need to Do Something
as Melissa

The Vast of Night
as Fay Crocker

American Horror Stories
as Scarlett Winslow · 3 ep.

Jessie
as Connie Thompson · 3 ep.

A.N.T. Farm
as Olive Doyle · 65 ep.

Disney's Friends for Change Games
as Self · 2 ep.

Romantically Challenged
as Scout Thomas · 5 ep.
Are You Smarter Than a 5th Grader?
19 ep.

Hannah Montana
as Gillian · 1 ep.

Supernatural
as Zoey · 1 ep.

Medium
as Adolescent Allison · 1 ep.

Boston Legal
as Daniella · 1 ep.
The Last Stop in Yuma County
2024