Taylor Swift was in London over the weekend as a part of The 1989 World Tour and Serena Williams got to really revel in the experience first-hand by walking the stage during the concert.

Serena didn’t hit the stage alone however. She was joined by Kendall Jenner, Martha Hunt, Karlie Kloss, Gigi Hadid and Cara Delevingne because everyone who is anyone is apparently friends of Taylor Swift these days.

Serena’s great friend Caroline Wozniacki attended the concert as well because one does not simply skip the opportunity to see T-Swift live.

With my girls @serenawilliams and @karliekloss singing along to @taylorswift!!

A photo posted by Caroline Wozniacki (@carowozniacki) on Jun 27, 2015 at 2:48pm PDT

Both women are preparing for Wimbledon, and this looked like the perfect way to blow off some steam before the big tournament.

[WTA Tennis]