Sierra Nikole [=McCormick=] (born October 28, 1997) is an American actress who has appeared in over 20 films and TV series. She is best known for her role as Olive Doyle in the Creator/DisneyChannel KidCom ''Series/ANTFarm'', her participation in the U.S. game show ''Series/AreYouSmarterThanAFifthGrader'' and her role as the demon {{Lilith}} in Creator/TheCW series ''Series/{{Supernatural}}''.

[[https://twitter.com/SierraNMcCormic She also has a Twitter]] [[http://instagram.com/sierramccormickxoxo and an Instagram]].
!!Tropes that apply to Ms. [=McCormick=] include:
* {{Adorkable}}: As Olive (and, to an extent, Sierra herself). Acting adorkable is what landed her the role of Olive in the first place (specifically, she talked about tigers for minutes on end).
* {{Bookworm}}: Again, both Sierra herself and Olive.
* CelebCrush: According to her Website/{{Twitter}}, [[Film/OzTheGreatAndPowerful James Franco]] [[http://instagram.com/p/ftd0qhk8Aw/ (whom she met in October 2013)]], [[Series/{{Scrubs}} Dave Franco]], Creator/AdamLevine, Creator/JosephGordonLevitt, [[Music/TheLonelyIsland Andy Samberg]], [[Series/{{Heroes}} Thomas Dekker]], and Creator/CillianMurphy.
* CelebrityEndorsement: [[http://www.peta2.com/heroes/sierra-mccormick-adoption-ad/ She's appeared in a peta2 adoption ad]].
* CreepyChild : Her role as {{Lilith}} in ''Series/{{Supernatural}}'' was nightmare-inducing, a testament to her acting ability, [[TheCutie as she is adorable anywhere else]].
** Also as "Creepy" Connie Thompson in ''Series/{{Jessie}}'' (albeit [[LighterAndSofter to a]] ''[[LighterAndSofter far]]'' [[LighterAndSofter lesser extent]]).
* TheCutie
* {{Fangirl}}: She's a {{Series/Super|natural}}[[Series/DoctorWho who]][[Series/{{Sherlock}} lockian]], and she loves Music/{{Maroon 5}}.
* GamerChick: Again, both Sierra herself (who loves ''VideoGame/AnimalCrossing'') and Olive.
* GenkiGirl: It really shows when she plays [[Series/ANTFarm Olive]] and [[Series/{{Jessie}} "Creepy" Connie]], and in [[http://youtube.com/watch?v=LnNg-up7rK8 her various]] [[http://youtube.com/watch?v=eYdpL3jLJWk Disney Channel]] [[http://youtube.com/watch?v=-rX0UWFtMwI intros]].
* HeterosexualLifePartners[=/=]PlatonicLifePartners: To most of the ''A.N.T. Farm'' cast, but particularly to Music/ChinaAnneMcClain (whom she's been been best friends with even before ''A.N.T. Farm'' due to their appearance in an episode of ''Series/HannahMontana''), Creator/JakeShort and Allie [=DeBerry=].
** She's also this towards ''Film/RamonaAndBeezus'' costar Joey King.
* HiddenDepths: Among other things, she plays the piano and speaks Spanish.
-->"[[https://twitter.com/SierraNMcCormic/status/381256913419137024 Yes, I sound incredibly formal, and the diction is somewhat basic, but yes [I can hold a conversation in Spanish].]]"
* IdolSinger: Unusually for such a prominent {{teen idol}} on Creator/DisneyChannel, {{averted|Trope}} so far.
* {{Meganekko}}: Sierra and Music/ChinaAnneMcClain play this [[http://antfarm.wikia.com/wiki/Chierra/Gallery?file=China_Anne_McClain_and_Sierra_McCormick.png#Modal adorably]].
* OlderThanSheLooks: She looks like she's 12 and sounds like she's 10, but she's really 17. The fact that she's only 5'2" certainly doesn't help.
* RapunzelHair: A more realistic version of the trope. Her hair is nearly to her waist even when braided or curled.
* SpiritualSuccessor: She's most frequently considered one to Music/EmilyOsment (considering she almost resembles Emily appearance-wise).
* TeenIdol: Although she's been acting since she was nine.
* TrademarkFavoriteFood: Orange Tic Tacs.