Comedian Jimmy Fallon stood in for the late Elvis Presley for a duet with veteran entertainer Barbra Streisand on Monday (15Sep14) during her first appearance on America's The Tonight Show in more than 50 years. The funnyman and Tv host donned an Elvis-style wig to perform Love Me Tender with Streisand, before switching to a black Stetson to portray country star Blake Shelton for a rendition of I'd Want It to Be You, and then channelling Michael Buble to sing It Had To Be You. Fallon's vocal skills during the duet medley prompted his superstar guest to quip after the segment, "I can hardly tell the difference...! That was actually good." Streisand's real all-star collaborations appear on her new album, Partners.