Jennifer Lawrence and David Letterman Sing! November 13, 2014Entertainment / Humor / Videos & Pictures Jennifer Lawrence and David Letterman Sing! YouTube caption: She hates singing in public, but Jennifer plays along with Dave on the show. Related Posts: Ariana Grande Playing Jennifer Lawrence (HD) SNL VideoPresident Obama and David Letterman Talk About Their…Will Ferrell as Harry Caray - David LettermanCelebrity Top Ten Things I've Always Wanted to Say…7'6 Tacko Fall Gets Posterized by Anthony Lawrence!!Brad Pitt leads awards ceremony sing alongFull house cast reunites to sing theme songJimmy Fallon, The Roots & "Star Wars: The Force…Britney Spears and her Boyfriend David Lucado Break UpDavid Gregory Quits NBC - Humiliated After Showdown…British Aid Worker David Haines Beheaded by ISISDavid Spade on Kanye West - Jimmy Kimmel LiveComments