Chrissy Teigen and John Legend surprise Robin Roberts at the top of the #Oscars pre-show. abcn.ws/2mkABox SUBSCRIBE to ABC NEWS: www.youtube.com/ABCNews/ Watch More on abcnews.go.com/ LIKE ABC News on FACEBOOK www.facebook.com/abcnews FOLLOW ABC News on TWITTER: twitter.com/abc GOOD MORNING AMERICA'S HOMEPAGE: gma.yahoo.com/