Many celebrities were in New Orleans this past weekend to support both Drew Brees’ The Dream Foundation and Matthew McConaughey’s Just Keep Livin' charity. One of the auction items up for grabs was a chance to sing with Kenny Chesney at the House of Blues.

Oscar award winner Reese Witherspoon spent $24,000 to join the "Young" singer on stage where she let loose.

We're pretty sure the “Legally Blonde” actress may have had a few cocktails before the performance, because she wasn’t holding back.

Reese swayed and shimmied in a white lace dress as she shared a mic with Kenny singing Johnny Cash’s "Jackson." It wasn't the best performance, but she was having fun!

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