Emily Blunt vs. Anne Hathaway in Lip Sync Battle

Anne Hathaway starts things out by hitting Emily Blunt with Love by Mary J. Blige. Emily retaliates by getting down to No Diggity by Blackstreet.

Emily Blunt channels her inner Janis Joplin as she performs Piece of My Heart in the final round against Anne Hathaway and her earth shattering rendition of Wrecking Ball by Miley Cyrus.