Arguably the most controversial "American Idol" contestant in history, Adam Lambert's story is coming to the small screen in the form of an "E! True Hollywood Story." "That's why I'm here. I'm an entertainer. To provoke conversation and opinion is part of what I do," says Lambert.In addition to Glambert himself, E! also caught up with his parents Leila and Eber, his brother Neil and his close friends Anne Powers and Vanessa Grigoriadis. "I'm very fortunate to have parents that recognized that I was different and recognized how I was special. They didn't ever try to box me in," says Lambert. The singer also divulges wild stories from his days performing in various musical theater gigs on cruise ships and throughout Europe. He explains, "I was exploring my sexuality a lot more aggressively. I was living a rock star lifestyle. I tried a lot of things - it was a big eye-opener for me." From how he told his parents that he was gay, to the release of potentially damaging photos of him kissing an ex-boyfriend during the height of the American Idol craze, to his Rolling Stone magazine cover story and his highly criticized American Music Awards performance, Lambert reveals all. Says the singer, "My fans have been really supportive of my choice to be open and upfront about my sexuality and my lifestyle. I have come from the belief that hiding something from people and manipulating what they think of you is far more offensive and disrespectful than just being upfront and being who you are."Lambert's story premieres Sunday, Nov. 21 at 9 p.m. ET/PT on E!Follow Zap2it and Zap2it Andrea on Twitter and Zap2it on Facebook for the latest TV, movie and celebrity news.Photo credit: E!