Evan Peters had a cameo in Deadpool 2 which starred Ryan Reynolds...who was engaged with Alanis Morissette at one point in the 2000s. Alanis was a guest vocalist on Ringo Starr's cover of "Drift Away" in 1998. Ringo was in the Beatles with Paul McCartney who we know has interacted with Al before.
I feel like I should choose someone who has become famous only in recent years because I'm too lazy to go through all 77 pages just to make sure I don't accidentally copy someone. So, Millie Bobby Brown