The 23 year old plays ditzy cheerleader Brittany in the hit musical show, but before becoming a series regular she was a back-up dancer for singers including Beyonce and Tina Turner.
But Morris had her heart set on being centre stage as she wasn't getting "anything back" out of her dancing career.
She tells the Boston Herald, "You're underpaid. You're under-appreciated. You're kind of just like the end of the stream.
"As much enjoyment (as) I got out of dancing, I felt like I didn't get anything back. I knew there was more that would make me happier, which is exactly what I'm doing."