Barbra Streisand, Jimmy Fallon Barbra Streisand, Jimmy Fallon

Barbra Streisand made a triumphant return to late night on Monday after a 50-year hiatus to promote her new duet album, Partners. But since none of Babs' collaborators were on hand, The Tonight Show host Jimmy Fallonstepped up to the plate.

"Of course, Elvis is no longer with us," Fallon explained. "So standing in for Elvis, Blake [Shelton] and Michael [Buble] will be me."

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Streisand then took the stage, where she was joined by Fallon doing his best impressions of Elvis, Shelton and Buble.

Though Streisand said Fallon shouldn't "give up his night job," she added that she was very impressed with his singing chops. "My husband and I watch you all the time and you're very musical and really good. So I was just making a joke at your expense."