She played the role of Brittany S. Pierce in the Fox musical comedy-drama series Glee.

[3] Morris competed at a young age in a variety of styles including jazz, tap, and contemporary.

[4][5][6] After graduating from Desert Mountain High School, where she was homecoming queen,[7] Morris spent a year at Arizona State University before moving to Los Angeles to pursue a dance career.

[3] Morris' first significant appearance was in 2006 on So You Think You Can Dance Season 2 where she made it through "Vegas Week" without being cut, but failed to make the final 20 by a vote of 3 to 2.

[11] Initially a background character who hardly ever spoke, the role grew as writers discovered Morris had a gift for delivering one-liners.

[18] Jarrett Wieselman of the New York Post opined that Morris had "emerged as one of the funniest second bananas on TV right now"[19] and a LA Times writer mentioned having a "comedy crush on Morris, who plays the galactically dim Glee Club cheerleader Brittany".

[20] When a promotional clip for the episode "Sectionals" indicated that Brittany Pierce and Santana Lopez had slept together, Dorothy Snarker, writing for lesbian entertainment website AfterEllen, praised the pairing, referring to them by the portmanteau "Brittana".

[21] Snarker called the two her "new favorite Glee pairing", commenting that: "While Heather Morris (Brittany) and Naya Rivera (Santana) have had minimal screen time, they've made it count.

Co-written with actresses Ashley Lendzion and Riki Lindhome, the video features appearances from Modern Family's Sofia Vergara and Morris' Glee castmates Matthew Morrison, Cory Monteith, Harry Shum Jr., and Naya Rivera.

[28] She was paired with professional dancer Maksim Chmerkovskiy,[29] though she danced with troupe member Alan Bersten starting on the second until the fifth week of the competition due to Maks suffering a calf muscle injury.

[30] Maks reunited with her to dance in the sixth week of the competition on April 24, 2017, but they were eliminated despite receiving the first perfect score of the season and topping the results board, causing fans to boo loudly.

[38] They began dating after Morris moved to Los Angeles and Hubbell contacted her on Myspace.

"[36] After graduating from the University of Louisiana in Lafayette, Hubbell began living with Morris in Los Angeles in early 2012.