Despite decades of hit songs, movies and tours, Dolly Parton is still surprised by her success.

"Coat of Many Colors," the NBC film based on Parton's song about her mother's love comes out on DVD May 3. The country superstar spoke with FOX411 on what the film means to her.

"Actually, I'm very excited about the fact that the DVD is coming out," Parton told FOX411 Country. "I'm so happy the movie did so well because it really did talk about my mom and my parents and just about growing up."

She continued, "It was about love and kindness and overcoming all that bullying. So it really touched a nerve in a lot of people...we're really proud of the ratings."

The songstress is also about to embark on her first North American tour in 25 years. The Tennessee native is bringing her "Pure & Simple" tour to 60 cities in 2016.

"I've been very blessed through the years and I've been doing tours in Australia and in Europe for the last few years," Parton told FOX411 Country in March. "But I hadn't had any big hit records in the United States in a long time. I've got a lot of history, a lot of records that have been big hits in the past but I just didn't think anybody would be interested in seeing me in concert with all the new country people and all, but evidentially they are interested."