Socialite and social media influencer Paris Hilton has been a fixture on TV and online for so long that most people think they know her. But, as she tells correspondent Tracy Smith, they don't know about a chapter in her life that, Hilton says, has been too painful to talk about … until now. She talks about her new YouTube documentary, “This Is Paris.”Subscribe to the "CBS Sunday Morning" Channel HERE: http://bit.ly/20gXwJTGet more of "CBS Sunday Morning" HERE: http://cbsn.ws/1PlMmAzFollow "CBS Sunday Morning" on Instagram HERE: http://bit.ly/23XunIhLike "CBS Sunday Morning" on Facebook HERE: https://www.facebook.com/CBSSundayMorning/Follow "CBS Sunday Morning" on Twitter HERE: http://bit.ly/1RquoQbGet the latest news and best in original reporting from CBS News delivered to your inbox. Subscribe to newsletters HERE: http://cbsn.ws/1RqHw7TGet your news on the go! Download CBS News mobile apps HERE: http://cbsn.ws/1Xb1WC8Get new episodes of shows you love across devices the next day, stream local news live, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free! http://bit.ly/1OQA29B---"CBS Sunday Morning" features stories on the arts, music, nature, entertainment, sports, history, science, Americana and highlights unique human accomplishments and achievements. Check local listings for CBS Sunday Morning broadcast times.