But at one point in time, she wasn't standing on the stage by herself. In fact, she took over the microphone alongside Prince William, himself, who joined the Red singer in belting out the lyrics to Jon Bon Jovi's "Livin' On a Prayer"—with Jon Bon Jovi!
A short clip of this magical moment surfaced online after someone in attendance posted a video on Instagram. "Classic Tuesday night with Jon Bon Jovi performing 'Living on a Prayer' with Taylor Swift and HRH," the caption read.
After the concert ended, William gave a short speech and presented Bon Jovi with the Centrepoint Great Britain Youth Inspiration Award for his humanitarian work. The event was held to raise money for Centrepoint, a charity providing housing and a range of other services to young homeless people in the U.K.
"I'm really excited," Swift had said during a radio interview with BBC Radio 2 of performing for the royals. "I'm really stoked. It's the first royal engagement I've done and I'm very, very honored.''