Only a few hundred lucky Swifties previously knew the identity of the child’s voice after the singer wrote on Tumblr she had shared the info at one of her private “secret sessions” before the album’s release.
Eagle-eyed fans previously noted that Reynolds and Lively liked Swift’s Instagram post previewing the song featuring the 2-year-old’s voice cameo. The couple is also parents to 13-month-old daughter Inez.
Swift and Lively cemented their BFF status in late 2015 when they posted a series of Instagram posts from their fun day at a Queensland theme park in Australia. They also celebrated the Fourth of July at Swift’s Rhode Island home last year when Swift was dating actor Tom Hiddleston.
Taylor was with Blake and Ryan at the beach and was playing gorgeous for them on her guitar, and then their daughter, James, kept saying “gorgeous” over and over
.. so Taylor was like, “could i use that?” and the intro was born
— jess (@jessxtn) November 10, 2017
In addition, the pop star dressed as Reynolds’ superhero character Deadpool for Halloween last year.
In “Gorgeous,” the third song off her album, Swift sings all about her romance with boyfriend Joe Alwyn.
And in late August, a source close to the singer told PEOPLE exclusively that the couple is still “very happy together” and continuing to spend time together out of the spotlight.