Barbra Streisand Returns To 'Tonight Show,' Duets With Fallon

Barbra Streisand made her first appearance on 'The Tonight Show' in more than 50 years Monday night. And, if that wasn't amazing enough, she performed a live duet with Elvis Presley!

Well, kind of. That was none other than Jimmy Fallon standing in for the king as Barbra belted out the first verse of Presley's "Love Me Tender," just one of the many tracks off her new duets album, 'Partners.'

And he wasn't done just yet.

Jimmy swapped his Elvis wig and shades for a cowboy hat to sing alongside Barbra as country crooner Blake Shelton.

And after that, he filled in for Michael Buble on the love song, "It Had To Be You." Jimmy really got into it and even went in for a kiss, but Barbra wasn't having that.

It was big enough that Streisand came on the show! This marked the first time she's been on a late-night talk show since she was a guest on 'The Tonight Show' back in 1963.

Though Babs did make a cameo on a 1994 episode of the 'Late Show' with David Letterman.

The consensus among fans Monday night? The 72-year-old totally killed it, and her appearance was definitely worth waiting for.