Chelsea Handler just gave her friend Reese Witherspoon a birthday gift she'll surely never forget.
Naturally, the comedian took to Instagram on Tuesday to with the actress a happy birthday by sharing a completely nude mirror selfie. Something tells us that Witherspoon, who turned 40 on Tuesday and performed with Keith Urban at her birthday party over the weekend, will greatly appreciate Handler's snap, in which she's wearing knee-high black socks and nothing else.
The "Chelsea Does" star has made it her mission over the last year or so to become a fierce advocate for the #FreeTheNipple campaign, so it may come as a surprise to some people that Handler opted to cover her private areas in this shot.
A post shared by Chelsea Handler (@chelseahandler) on Mar 22, 2016 at 10:05am PDT
Regardless, there's no getting around the fact that the best-selling author's bod looked incredible in the picture, which looks to have been taken in her bathroom.
Work it, Chels!
See more photos of Chelsea Handler through the years:
More from AOL.com:
Margot Robbie set to play figure skater Tonya Harding in 'I, Tonya' film
Stars react to devastating Brussels terrorist attacks
Paul Qui, 'Top Chef' winner, arrested for allegedly assaulting girlfriend