Now Playing: First lady Melania Trump undergoes kidney surgery at Walter Reed

Now Playing: First lady Melania Trump has kidney surgery

Now Playing: 'GMA' Hot List: Ryan Reynolds discusses working with Celine Dion for 'Deadpool 2'

Now Playing: Taraji P. Henson engaged to former NFL player

Now Playing: J Balvin rocks out to 'Mi Gente' live on 'GMA'

Now Playing: Liam Payne sings 'Strip That Down'

Now Playing: Will Meghan Markle's dad attend her wedding?

Now Playing: Meghan Markle's dad not 1st royal relative caught in scandal

Now Playing: See Meghan Markle, Prince Harry's London hotspots

Now Playing: Liam Payne and J Balvin dish on viral music video

Now Playing: Liam Payne and J Balvin perform their hit song 'Familiar' on 'GMA'

Now Playing: Ryan Reynolds opens up about 'Deadpool 2' live on 'GMA'

Now Playing: 'Dancing' couple speaks out after triple elimination

Now Playing: Supreme Court strikes down federal anti-sports gambling law

Now Playing: Security camera captures 'angel' image over truck

Now Playing: Mom accused of torturing 10 children speaks out

Now Playing: Concerns growing over next volcano eruption in Hawaii

Now Playing: WH faces backlash for not apologizing for McCain comment

Now Playing: Trump visits first lady in hospital after kidney procedure

Now Playing: Over 50 dead as US opens embassy in Jerusalem