Best friend goals!

Jennifer Garner and Reese Witherspoon are celebrity BFFs.

For Reese’s birthday, Jennifer wore her old marching band gear, pulled out the saxophone, and performed a special song!

Jennifer captioned the Instagram video with this message:

“Many moons ago, my high school marching band played this song for homecoming. Today I play it for my boo. @reesewitherspoon.”

This is true friendship!!!

Filed under: jennifer-garner, Reese Witherspoon