Taylor Swift joined onstage by superstar pals

Taylor Swift thrilled fans by bringing a host of her celebrity friends including Cara Delevingne and Kendall Jenner onstage with her at a London gig on Saturday (27Jun15).

The Shake It Off hitmaker, who is currently on a world tour, stormed the stage at Hyde Park in the U.K. capital and enlisted supermodels and a sports star to accompany her.

Alongside British model Delevingne and Kim Kardashian's half-sister Jenner were fellow models Gigi Hadid, Martha Hunt and Karlie Kloss as well as tennis legend Serena Williams.

Saturday's gig marked the second appearance from Delevingne, who brandished a huge Union Jack flag when she arrived onstage, on Swift's 1989 Tour after she previously joined the singer at a gig in Philadelphia, Pennsylvania earlier this month (Jun15) with Law & Order: Special Victims Unit actress Mariska Hargitay.

Swift concludes her tour in Melbourne, Australia in December (15).