Lady Gaga Performs Princess Diana Tribute

Lady Gaga has unveiled a new song dedicated to the memory of Princess Diana.

The American singer performed Princess D.I.E. at a concert at Twickenham Stadium, after telling the crowd that the track was her way of paying homage to the late royal, who died in a car crash in Paris in 1997.

"Since I was a very young girl, the People's Princess was the most important person in me and my mother's life," she said.

"I swore if I ever had an audience like this in London I would take a moment to appreciate her."

Gaga said she knew that the song's title could provoke an angry response.

"This song is called Princess Di - D-i-e. I predict controversy, but I don't care ... Let's take a moment to appreciate her presence and what she means."

Gaga also paid tribute to Amy Winehouse, who died in July 2011 after a long battle with drink and drugs.

She said: "Losing Amy was a tragedy, let's sing it for her."

As well as unveiling the Princess Diana tribute track, Gaga also performed her biggest hits including Poker Face and Bad Romance.

The US diva changed into a number of extravagant outfits during the night and at one point donned a white T-shirt with the name of her forthcoming album, Art Pop.

After the show, Gaga wrote on Twitter that she would never forget the concert and that London was "the fairest of the ball".