"My mom's favorite song is 'Blackbird,' and it's my favorite song as well," Stone said on The Late Showlast week. "I wrote a letter to Paul McCartney asking him if he would draw two little bird feet, because he wrote the song. And yesterday, he sent them to me."
"We've never gotten tattoos before, and probably never will again," Stone added.
Stone, who's hosting Saturday Night Livethis week, will star in the upcoming Spider-Man reboot as Gwen Stacy, Peter Parker's first girlfriend.