MUST SEE: Foo Fighters bring rock royalty on stage during LA gig

If you weren't there, or there weren't YouTube videos of it , you would never believe it, but the Foo Fighters had a special guest join the mega group on stage - and it was member of rock royalty.

The legendary Stevie Nicks joined Haim and the Foo Fighters Monday night to cover Tom Petty's 1981 "Stop Draggin' My Heart Around" at the LA Forum during the band's Sonic Highways tour, NME reported.