She also portrayed Young Cosette in the Broadway production of Les Misérables (1996), and Jade in the teen comedy film Bratz (2007).

[8] At the age of nine, Parrish saw a production of The Phantom of the Opera at the Neal S. Blaisdell Center and fell in love with the idea of performing.

[10] Parrish lived in Kaneohe, Hawaii until the age of 14, when she and her family moved to Burbank, Los Angeles so she could pursue a career in the entertainment industry.

[14] Parrish began her acting career when she was cast as Young Cosette in the National Touring Company of Les Misérables, and later portrayed the role for two months in the Broadway production at the Imperial Theatre.

[8][16] In 1999, Parrish landed her first substantial television role in NBC's action series Baywatch, appearing in two episodes as Hina, a young girl whom Mitch Buchannon (David Hasselhoff) saves from drowning.

In 2000, Parrish was featured in Disney's live-action television film based on the Pinocchio story Geppetto, portraying the role of Natalie.

Parrish also appeared in shows and made-for-television films on the Disney Channel, and also guest starred in Fox's sitcom The Bernie Mac Show, Nickelodeon's children's comedy-drama series Zoey 101,[18] and Fox's teen drama series The O.C..[4] Parrish then portrayed Bratz member Jade in the 2007 live-action film Bratz.

She subsequently guest starred in the CBS drama series Hawaii Five-0, playing the role of Rebecca Fine, an ambitious and strong-willed chemistry student,[26] and made a guest appearance in Lifetime's fantasy legal drama series Drop Dead Diva as cheerleader Chelsea Putnam.

[29] In 2017, she guest starred in Fox's procedural drama series Rosewood, playing Selena Monet, a young popstar.

In November 2017, Parrish began portraying Sandy Dumbrowski in a Toronto production of Grease, alongside Katie Findlay.

[31] Parrish co-starred as Margot Covey in the film adaptation of Jenny Han's young adult romance novel To All the Boys I've Loved Before, with Lana Condor and John Corbett,[32] and appeared alongside Angela Trimbur and Fairuza Balk in the home-invasion thriller Hell Is Where the Home Is.

[45] She has graced the covers of numerous fashion magazines, including Nationalist,[46] Pulse Spikes, Luca,[47] Vulkan[48] and Modeliste.

She has partnered with several brands, including Room & Board Modern Furniture products, Robitussin cold relief,[49] Beauty Rest Black mattress[50] and Glade candles.

[51] In October 2018, she appeared in an anti-bullying public service announcement for Disney and ABC’s #ChooseKindness campaign with Sasha Pieterse for National Bullying Prevention Month.