Taylor Swift and Jack Antonoff celebrate ‘Cruel Summer' hitting No. 1 four years after initial release

Taylor Swift'slatest milestone feels like a complete 'fever dream.'

The song, 'Cruel Summer', from her album 'Lover 2019', reached No. Billboard's Hot 100 chart reached No. 1 this week. Billboard, the music charting website, announced this news on Monday. 3.

Swift's 'favorite song' was released over four years ago, but only became a single this June.

We just wanted to thank you for making Cruel Summer a Hot 100 Number. Swift said in an Instagram video posted Monday that she was ecstatic about her number one position. She added, "It's no longer summer - it's fall and I'm wearing sweater." We love you all!

Jack Antonoff, Swift's frequent collaborator and cowriter, appeared with Swift in the video and stated that they thought 'Cruel Summer was the best song' on her album.

But we thought, Oh, You Know What? He said: 'This is ourbest secret song. That's what we believed. It really means a lot.

Swift's 44-song "Eras Tour" setlist opens with "Cruel summer," which has grown in popularity since Swift's tour began in March.

She told her Pittsburgh audience that song in June. Her label had decided to make it "my next single" at the time, because it was being streamed so much.

Billboard reported Monday, in another milestone that isn't so cruel, that Swift was now ranked 10th on a 'elite list' of artists who have ten or more Number One songs. The Hot 100 chart has ten or more No.