Taylor Swift fans in Vienna gather in their hundreds to sing together after the popstar's concerts were cancelled when ISIS teen who plotted to slaughter audience members by driving into crowd outside venue then detonate suicide vest was arrested

Hundreds of Taylor Swift fans have flooded the streets of Vienna to unite in song after the Austrian leg of the singer's sold-out Eras Tour was cancelled over an ISIS terrorism plot.

Scores of fans donning their elaborate concert outfits and friendship bracelets are meeting across the city to sing and dance to the popstar's hits.

Videos shared on TikTok and Twitter show crowds of Swifties - the term used to describe Swift's fans - remained strong as their voices echoed through the Austrian capital today while they sang the lyrics they had hoped to hear during her three-hour-plus concerts this weekend.

The group, suggesting that although the concert was cancelled the terrorists still did not win, belted out the words to 'Karma', as well as Swift's protest song 'Miss Americana and the Heartbreak Prince' and 'You Need to Calm Down', which is widely recognised as her anti-hate and pro-LGBTQ anthem.

Police arrested the 19-year-old who allegedly plotted the foiled attack on Wednesday morning. His accomplice, aged 17, was detained in the afternoon. Authorities say both suspects appear to have been inspired by the Islamic State group and al-Qaida.