Taylor Swift took "New Heights" to heart ... 'cause the singer's appearance on Travis and Jason Kelce's podcast was one for the record books -- literally!!
Guinness World Records officially recognized T. Swift's sit-down with the Kelces as a historic event ... as the 1.3 million YouTube viewers it drew in was the biggest concurrent audience in the platform's history.
The accomplishment is no surprise -- as GWR pointed out, Tay is a "record-breaking machine" at this point .