Taylor Swift Invades Victoria's Secret Fashion Show to Perform 'I Knew You Were Trouble'

Wearing a Union Jack costume, the country singer is joined by Fall Out Boy to perform the band's 'Light 'Em Up' before returning to the stage in a silver dress to sing her 'I Knew You Were Trouble'.

Taylor Swift shared stage with some of Victoria's Secret Angels during a fashion show at the Lexington Avenue Armory on Wednesday, November 13 in New York. The 23-year-old singer rocked the stage at the event to perform her hit song

For her first performance, Swift was joined by Fall Out Boy to sing the band's "Light 'Em Up" for the opening of the first section, "British Invasion". Instead of putting on the lingerie that makes the fashion show famous, she appeared onstage in a Union Jack costume and a mini hat with the same design.

She later returned to the stage for the final section, "Snow Angels". Wearing a sparkly silver mini dress, she delivered a powerful rendition of "I Knew You Were Trouble". During the second performance, Swift was seen having a fun moment with model Lily Aldridge.

After appearing with Swift during the opening section, Fall Out Boy graced the stage again to perform their track in the "Birds of Paradise" section.

The models who took part at the event included Aldridge, Karlie Kloss, Doutzen Kroes, Alessandra Ambrosio, Cara Delevigne and Candace Swanepoel. The latter received the honor to wear a $10 million bra that features 18-carat gold and 4,200 precious gems including a 52-carat, pear-shaped ruby.