Watch the video here...
Swifties, did you see this?
Taylor Swift performed at Wembley Stadium in London at the weekend.
Described as one of the hardest gigs of her career, following on from cancelling gigs in Vienna due to a foiled terrorist attack, Taylor was presumably very nervous about performing in London.
So, who did she call in for support?
Taylor brought her best friend Ed Sheeran on stage with her.
Watch the video here: