Now Playing: Charlie Sheen's Advice for Lindsay Lohan

Now Playing: Charlie Sheen Sounds Off Against CBS

Now Playing: Charlie Sheen's Pre-Hospital Dance

Now Playing: Sarah Jessica Parker launches wedding dress line

Now Playing: Dwayne 'The Rock' Johnson welcomes baby girl Tiana

Now Playing: Ali Wentworth opens up about new book on 'GMA'

Now Playing: Chris Rock and Adam Sandler play 'Rock, Paper, Sandler'

Now Playing: Chris Rock and Adam Sandler open up about 'The Week Of'

Now Playing: Why Kate left the hospital so quickly after delivering royal baby no. 3

Now Playing: Behind the scenes of 'American Idol'

Now Playing: College announces scholarships for Fortnite players

Now Playing: Actress charged with sex trafficking due in court

Now Playing: World awaits name of Britain's new royal baby

Now Playing: 'American Idol' reveals top 10 contestants

Now Playing: 'GMA' Hot List: Michelle Williams opens up about how she became engaged

Now Playing: Shania Twain apologizes for comments made about Trump

Now Playing: Tracy Morgan on giving back to Brooklyn, dinner with Morgan Freeman

Now Playing: Prince George, Princess Charlotte visit their new baby brother

Now Playing: New baby spotted in the Lindo wing - but this one's not royal

Now Playing: Princess Kate delivers a boy: What to expect next