Now Playing: Laurie Metcalf talks 'Lady Bird,' 'Roseanne' and 'Three Tall Women' on Broadway

Now Playing: 'Three Billboards' wins, women make waves at UK film awards

Now Playing: Jordan Peele announces new film

Now Playing: 'Three Tall Women' star Glenda Jackson joyously sings 'I'm Forever Blowing Bubbles'

Now Playing: Tony nominee Glenda Jackson remembers her iconic movie roles, political career

Now Playing: Meghan Markle's top Los Angeles spots

Now Playing: Melissa McCarthy says she roots for internet bullies to find joy

Now Playing: Katy Perry and Taylor Swift reportedly end longstanding feud

Now Playing: Meghan Markle waxwork unveiled at Madame Tussauds

Now Playing: Kimmel: Trump 'hasn't read one word' of Iran deal

Now Playing: 'Roseanne' faces backlash for portrayal of Muslims

Now Playing: Katy Perry and Taylor Swift appear to end feud

Now Playing: Federal judge rules Jay-Z must comply with subpoena

Now Playing: Gabrielle Union on why her message about raising black boys is resonating

Now Playing: This graphic designer created an 'Artphabet'

Now Playing: Cardi B reveals her 'weird, crazy, spooky' pregnancy dreams

Now Playing: Mayim Bialik shares parenting tips as she talks raising boys in today's world

Now Playing: Kareem Abdul-Jabbar makes 'Dancing with the Stars' finals prediction

Now Playing: 2 Chainz proposes on the Met Gala red carpet

Now Playing: Inside the 2018 Met Gala