Here’s to Billie the lady slayer.
Instagram may have a new dynamic duo on its hands.
Season 6 was in full swing, and Gellar had already gracedthree coversofEntertainment Weekly.

Sarah Michelle Gellar; Billie Eilish.Jon Kopaloff/WireImage; Jeff Kravitz/FilmMagic
But you know, age is just a number.
“I’m dead.
That’s all,” the 45-year-old actress wrote.
The interactions didn’t stop there.
As for Gellar and Eilish’s mutual affection for one another?
All we’re gonna say is… Freddie Prinze Jr., watch your back.