Early life

McCormick was born in Asheville, North Carolina. She moved to Los Angeles, California at a young age.

Career

McCormick first took an interest in acting in 2006 when she joined The Corsa Agency in Los Angeles. Her first onscreen appearance was uncredited, in the television series 'Til Death at the age of nine. In 2007, she beat out thousands of other children to be cast in the second season of the game show Are You Smarter Than a 5th Grader? She also guest starred on the Disney Channel series Hannah Montana in the 2008 episode "Welcome to the Bungle". She also co-starred with McClain in the film Jack and Janet Save the Planet. McCormick's other credits include the film Ramona and Beezus in 2010 as Susan Kushner and the television film A Nanny for Christmas in 2011. In 2011, she was chosen for the role of Olive, a girl with an eidetic memory, in the Disney Channel series A.N.T. Farm. She was cast after an audition where she continuously spoke about tigers. Dan Signer stated: "And as I heard her continually talking about tigers, I thought, 'That's just how Olive would sound.' Which is how Sierra got that part." According to an interview with McCormick, getting the role was easy because she and China were already friends from their previous work experience.

Personal life

McCormick currently lives in Los Angeles, California with her parents and sister Kayla. She has a dog named Annie, with whom she appeared with in a PETA ad campaign promoting the adoption of shelter animals.

Filmography

Film roles

Year	Title	Role	Notes
2009	Land of the Lost	Tar Pits Kid
2010	Ramona and Beezus	Susan Kushner
2010	A Nanny for Christmas	Jackie Ryland
2011	Spooky Buddies	Alice
2015	Some Kind of Hate	Moira

Television roles and appearances

Year	Title	Role	Notes
2007	'Til Death	Kid	"Summer of Love" (Season 1, Episode 22)
2007-08	Are You Smarter Than a 5th Grader?	Herself / Judge	Season 2
2007-09	Curb Your Enthusiasm	Emma	"The Bat Mitzvah" (Season 6, Episode 10) "The Reunion" (Season 7, Episode 3) "The Table Read" (Season 7, Episode 9)
2008	Boston Legal	Daniella	"Dances with Wolves" (Season 5, Episode 3)
2008	Supernatural	Lilith	"No Rest for the Wicked" (Season 3, Episode 16) "Yellow Fever" (Season 4, Episode 6)
2009	Jack and Janet Save the Planet	Molly	Voice; Television film
2009	Criminal Minds	Lynn Robillard	"Bloodline" (Season 4, Episode 13)
2009	Hannah Montana	Gillian	"Welcome to the Bungle" (Season 3, Episode 8)
2009	Monk	Anne Marie	"Mr. Monk and the Dog" (Season 8, Episode 11)
2009	The Dog Who Saved Christmas	Kara Bannister	Television film
2010	Medium	Allison (Young)	"There Will Be Blood... Type A" (Season 6, Episode 17)
2010	CSI: Crime Scene Investigation	Gracie Layman	"Irradiator" (Season 10, Episode 17)
2010	Romantically Challenged	Scout Thomas	Main role
2011-14	A.N.T. Farm	Olive Doyle	Main role
2011-14	Jessie	Connie Thompson	"Creepy Connie Comes a Callin'" (Season 1, Episode 7) "Creepy Connie's Curtain Call" (Season 1, Episode 23) "Creepy Connie 3: The Creepening" (Season 3, Episode 11)
2013	The Breakdown	Little Girl	Television film

Music videos

Year	Artist	Notes
2011	"Dynamite"	Guest appearance; China Anne McClain's music video

[ Source: Wikipedia ]