“Croeso i Daith Eras” (“Welcome to the Eras Tour”) was her opening song for the crowd.
During her performance, one of her backing vocalists also used the Welsh word “Ych a fi,” which is meant to denote something repulsive, as the star passed the microphone.
Despite being the home of Welsh rugby, the Principality Stadium was transformed for the 34-year-old’s concert on Tuesday.
Commuters were alerted to the possibility of travel disruptions as the majority of the day saw road closures in Cardiff’s downtown.
Swifties, her devoted followers, traveled great distances to catch a glimpse of their idol.
Merchandise was already on sale as many travelers arrived in the Welsh capital the day before the performance.
One concertgoer who had driven all the way from Oregon, USA, was interviewed by News.
Amanda Huss declared that she had chosen to “make a vacation” out of her journey to Cardiff and that she was “stoked” about the concert.
Although Orla Condron, from Milford Haven in Pembrokeshire, hadn’t gone as far, she said she felt a part of “a little community” and it was “nice” to see other fans.
A fan expressed that she “cried” when her friend was able to secure tickets for them.