Taylor Swift left her fans surprised as she gave an amazing shout-out to her besties Blake Lively and Ryan Reynolds’ kids during her Eras Tour concert in Philadelphia.

The Anti-Hero singer won the hearts of millions of her fans as she made a special gesture to Lively's two daughters during the Philadelphia show on Friday.

Swift called their names James and Inez during an acoustic moment and expressed love for the two when they made an appearance at the concert venue.

The Midnights singer was rocking her dazzling red Ashish coat on stage when shouted out Reynolds' and Lively's kids' names.

Swift, 33, who's rumored to be dating Matty Healy, was also seen mouthing what appeared to be 'Hi, James! Hi, Inez!'

James, 7, Inez, 6, are Lively and Reynolds' two eldest kids. The kids were also spotted with their mom, 35, and Swift as they exited the stage.

Taylor Swift also penned a song Betty after Lively and Reynolds’ daughter - and before performing it is when the pop star reportedly shouted out the children's names.

Besides James and Inez, Lively and Reynolds also share a 3-year-old daughter Betty. The couple also welcomed a fourth baby in February, whose name hasn't been revealed yet.