Now Playing: 'GMA' Hot List: Adam Rippon's magical interview with Cate Blanchett

Now Playing: Shemar Moore reveals the sext he accidentally sent to his mom.

Now Playing: John C. Reilly on what 'Step Brothers' quote he can't get away from

Now Playing: Jane Fonda reflects on her Vietnam War protest

Now Playing: Jane Fonda on why she believes we should 'love' Trump

Now Playing: Shemar Moore reveals the sexy text he accidentally sent to his mom

Now Playing: Sara Haines dominates 'Step Brothers' trivia game against Michael Strahan

Now Playing: Carrie Underwood receives her star on the Hollywood Walk of Fame

Now Playing: Tori Kelly gives a special live performance of ‘Questions’ on 'GMA'

Now Playing: Freddie Highmore dishes on what's next on 'The Good Doctor'

Now Playing: We had Adam Rippon interview Cate Blanchett and the results are magical

Now Playing: Celine Dion says she's working on new music

Now Playing: Michael Moore on Donald Trump and who Moore would love to see as the next president

Now Playing: Kelly Clarkson on Aretha Franklin's influence, daughter's crush on Chris Martin

Now Playing: Kelly Clarkson on new tour, speaking out about politics as an artist

Now Playing: Jane Fonda on dating when famous: 'People come looking for you'

Now Playing: LeBron James will star in 'Space Jam' sequel

Now Playing: Meghan Markle's cookbook collaboration is an instant bestseller

Now Playing: Josh Groban performs 'Bridge Over Troubled Water' on 'GMA'

Now Playing: Jack Black shows off secret yodeling skills