Now Playing: Erika Jayne on going from 'Real Housewives' to 'Dancing with the Stars'

Now Playing: Erika Jayne discusses being booted off 'Dancing'

Now Playing: Get #RoyalWedding ready with this easy-to-make cocktail

Now Playing: Erika Jayne clears up rumors she's leaving 'Real Housewives of Beverly Hills'

Now Playing: A look at Prince Harry and Meghan Markle's life in the public eye

Now Playing: Sneak peek of Markle, Harry's wedding cake

Now Playing: Two words from Michael Keaton leave college grads cheering

Now Playing: Laurie Metcalf talks 'Three Tall Women' and 'Roseanne'

Now Playing: How Harry, Markle cope with the spotlight

Now Playing: Exploring Windsor before the royal wedding

Now Playing: Security increased for Harry and Markle's wedding

Now Playing: Meet 2 people invited to watch the royal wedding on Windsor Castle grounds

Now Playing: What to expect for Meghan Markle's wedding dress

Now Playing: How Meghan Markle's high school is celebrating the royal wedding

Now Playing: Pro polo player on attending Prince Harry's wedding

Now Playing: How Meghan Markle breaks the mold as royal bride

Now Playing: Prince Charles to walk Meghan Markle down the aisle

Now Playing: Royal fans flock to Windsor for Harry, Markle's wedding

Now Playing: A look back at how Harry met Meghan

Now Playing: Royal wedding baker puts finishing touches to cake