Those involved in the casting for Hairspray have acknowledged that she was not the best singer and dancer to audition for the lead role of Tracy. Still, the casting crew really admired Nikki's spirit and self-confidence, specifically while she was dancing. Nikki herself has often said that she was never afraid to "shake what my mama gave me". This is one of the big reasons why she landed the part.
Nikki: I was an ice-cream scooper at a Coldstone Creamery in Rhode Island. We make it all by hand. Whatever is your fantasy at Coldstone, we make it come true...well, you know what I mean!
Nikki: I grew up in Great Neck, and I've been singing since the age of three, and I was kind of the go-to girl in Great Neck, if you will, for singing at weddings and funerals...you know, whatever I could help the community out with!
Nikki: (about working with such big-name stars in "Hairspray") Well, of course I was excited. I was nervous, but more than anything, they did a nationwide search for my character, so they saw a lot of girls, so I wanted to prove to them that they had picked the right girl, There was no time for me to be starstruck or crazy nervous, so I just went out there and treated them like normal people. But I mean, they were still Christopher Walken and Queen Latifah!