Holker was born in Anoka County, Minnesota, grew up in Orem, Utah, and graduated from Timpanogos High School in June 2006.

Holker performed with Earth, Wind and Fire at the opening and closing ceremonies at the Olympic Games in 2002, and in the Disney Channel original films High School Musical (2006) and High School Musical 2 (2007).

She performed with a show called Ballroom with a Twist, choreographed by Louis Van Amstel, and appeared with American Idol's Clay Aiken in his PBS special Tried and True.

Holker was featured in the "Jar of Hearts" music video by Christina Perri.

Holker has taught at different dance conventions and workshops across the country, also branching out into choreography.

On February 11, 2015, Holker was partnered with R5 singer and actor Riker Lynch in the show's 20th season.