Hathaway won the Academy Award for Best Actress for her performance in the movie musical "Les Miserables." Her stage credits include the Shakespeare in the Park production of Twelfth Night. She was recently appointed to a three-year term on the board at the Public Theater.
Fallon accompanied Hathaway on the piano, and the two sang Snoop Dogg's "Gin and Juice," 50 Cent's "In Da Club" and Kendrick Lamar's "Bitch Don't Kill My Vibe."
Watch Hathaway's performance below: