Miley Cyrus
Singer Miley Cyrus arrives at the 2013 MTV Video Music Awards in New York August 25, 2013. Reuters

Miley Cyrus’ MTV Video Music Awards act, where she performed “We Can’t Stop” followed by a rendition of Robin Thicke’s summer hit “Blurred Lines,” might not have won her many fans, but that hasn't stopped her from regarding “We Can’t Stop” as one of her greatest achievements.

"The best thing I've done in my career is 'We Can't Stop' music video," Cyrus said in an unlocked clip from the upcoming deluxe edition of "Miley: The Movement," a documentary which records her transformation from a Disney actress to the present-day raunchy pop star.

The video, an exclusive clip from the documentary, which airs Sunday at 8 p.m. EDT, was unlocked on Thursday by fans after tweeting #UnlockMiley, MTV reported.

According to reports, the 20-year-old was initially hesitant about using “We Can’t Stop” as her first single from BANGERZ, her latest album, because the song did not immediately jump to the top of the charts. But, the song soon picked up and it broke a Vevo record, reaching 100 million views in a short period of time.

And, just like her VMAs performance, the “We Can’t Stop” video was also considered raunchy, with Cyrus constantly sticking her tongue out and licking everything in sight.

"People are expecting a shocking video, but it's doing it in a way that's not predictable," she said in the clip. "Yeah, maybe I'm here and being crazy and sticking my tongue out, but I'm dressed as a bear. It's toughness and raunchiness, but with something that's really sweet and endearing. There was these subconscious little trippy moments in there, and that's why people wanted to watch it over and over and over again."

“Miley: The Movement” charts Cyrus’ reinvention, beginning with the release of "We Can't Stop" and touching upon her controversial VMAs performance before leading up to the release of her new album, BANGERZ. It gives viewers access to Cyrus’ life as she goes about making music.

“As I delved into her history, I realized there was something really interesting going on here, she's going through a change and great things can happen in the midst of change: public acceptance, private exploration," Paul Bozymowski, director of the documentary, told MTV News.

"I knew [the documentary] wasn't going to be a behind-the-scenes thing; it was going to tell the story of what she's going through at this particular moment in her life."