Taylor Swift joined on stage by celeb friends in Hyde Park

The 25-year-old singer - who was bringing the UK leg of her '1989' tour to a close - couldn't hide her emotions as she gave her famous friends a hug, following the models and tennis champion strutting their stuff on the runway during 'Style', including London model Cara - who Taylor described as "one of (our) own" - waving a Union Jack flag.

Opening with 'Welcome To New York', Taylor said she was "psyched" to perform to 65,000 people in London.

She said: "I'm psyched that we have sold out Hyde Park. I just love London in general and I love you.

"I remember seven years ago when I played my first UK show. King's College had sold out and there were a few hundred people. I was surprised that a few hundred people would come to see me perform and now I'm looking at 65,000 people in Hyde Park.

"This is one of those nights where I'm aware I'm going to be taking mental snapshots so I can remember this night for the rest of my life. I love hearing you sing, dance and jump around. I will remember this night for the rest of my life."

Taylor wowed her fans with numerous costume changes - including an LED-lit dress - and played all her hits like 'I Knew You Were Trouble' and 'We Are Never Getting Back Together', as well as new songs from her '1989' album. However, she didn't play '22' or 'You Belong With Me'.

The set was interspersed with clips of Taylor's celebrity friends - including Selena Gomez, Haim and Lena Dunham - talking about friendships and romance.

In one clip, Danielle Haim said: "Who's she gonna date next? What's she gonna do? Let me tell you one thing: Taylor doesn't need to worry about anything."

Taylor finished the set with 'Shake It Off', and said: "This has been the best night. It's been unforgettable."

Ellie Goulding, John Newman, Vance Joy and Rae Morris performed earlier in the night at Hyde Park.

British Summer Time Festival ends today (28.06.15) with headliners Union J.