Emma Stone, David Letterman

Easy A star Emma Stone and her mother are getting tattoos designed by Paul McCartney to celebrate her mom's breast cancer going into remission.

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"My mom's favorite song is 'Blackbird,' and it's my favorite song as well," Stone said on The Late Show last 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 Live this week, will star in the upcoming Spider-Man reboot as Gwen Stacy, Peter Parker's first girlfriend.