As seen in fan-taken footage from a concertgoer in Stockholm, several fans speculated it was a love bite left by her NFL boyfriend Travis Kelce, 34.
She had just recently returned to the European leg of her world tour after enjoying a romantic getaway with her boyfriend in Lake Como in Italy.
During her break, the couple stayed at a luxurious €21,000-a-night villa and enjoyed a romantic boat ride, cuddling and making out on the water taxi.
After spending five days loved-up with her beau, the singer returned to the European leg of her ongoing Eras Tour.
Fans noticed the evidence of her romantic and intimate trip as she was sitting at the piano and performing songs from her Evermore era.
Wearing a sparkling blue number, she pulled her hair to one side while singing Champagne Problems and revealed the blatant mark.
Concertgoers quickly noticed and took to social media as they shared clips, zooming into her neck.
It comes shortly after Kelce caught Swift’s last concert in Paris, and the pair jetted off to Italy together for a quick getaway.
The couple arrived in Lake Como on Mother’s Day on May 12 and stayed there for nearly five days before leaving on May 17.
On the first day of their trip, eyewitnesses said they enjoyed ‘a long walk around the lake late at night.’
During their late night outing, which the insider called ‘very romantic,’ the couple held hands and ‘would also exchange a kiss every so often.’
Swift and her beau also enjoyed a romantic candlelit dinner under the stars during their sweet excursion.
The Grammy winner and the Kansas City Chiefs tight end were first romantically linked in September 2023 when Swift attended at one of his games to cheer him on.
After months of dating rumors, it was later revealed that the couple had already been dating several weeks.
The Fortnight hitmaker was also seen in attendance at his Super Bowl game and shared a sweet kiss after he and his team took home the win.
On her latest album, despite a majority of the songs allegedly about her ex Matty Healy, Swift also penned several others, which fans believe are dedicated to Kelce and their sweet romance.
