Jennifer Garner Plays 'Happy Birthday' on the Saxophone for Reese Witherspoon (Video)

It’s Reese Witherspoon‘s birthday and her friend Jennifer Garner is celebrating by playing “Happy Birthday” on the saxophone for her!

Jen whipped out her old high school band outfit and marched around her backyard while playing the birthday tune on the sax.

“Hey, @reesewitherspoon! I don’t know why you’re on my mind today…..🎷🎁🎈🎈❤️❤️❤️
#happybirthdayfriend,” she captioned the clip on Instagram.

Reese commented on the post and said, “#1 Best Birthday Message.”

In other Jennifer news, it was just announced that her movie Peppermint will hit theaters on September 7.