The 60-minute show marked The pop star's comeback, after a broken hip caused
her to cut short her Born This Way Ball tour earlier this year.
"To say that I've missed you, it's a bit of an understatement,"
she told her fans on stage at London's Roundhouse.
Featuring pig men in boiler suits and multiple costume changes, the show was
streamed live around the world.
In the audience were celebrity fans including Adele, Niall Horan from One
Direction and TV personality Arlene Phillips.
For fans, it was the first taster of Gaga's forthcoming album ArtPop, as
seven songs - including Manicure, I Wanna Be With You and Swine - were played
for the first time.
Many attended the show in a dress code dictated by the 27-year-old on
Twitter - including "bedazzled pig snouts" and "trash bags or
artclothes".
British
MPs on Thursday August 29 2013 rejected possible UK military action in Syria,
which almost guarantee that Britain plays no direct role in any U.S. attack on
Bashar Assad's government.
A government motion was defeated by 285 to 272, a majority of 13 votes.
British PM David Cameron stated after the vote that "the British
Parliament, reflecting the views of the British people, does not want to see
British military action."
Meanwhile, the US said it would "continue to consult" with London,
"one of our closest allies and friends". White House issued a
statement that reads "President Obama's decision-making will be guided by
what is in the best interests of the United States."
It added that Mr Obama "believes that there are core interests at stake
for the United States and that countries who violate international norms
regarding chemical weapons need to be held accountable".
Obama administration officials on Thursday told a group of US lawmakers in a
conference call that "it is beyond a doubt that chemical weapons were
used, and used intentionally by the Assad regime," said Eliot Engel, the
senior Democratic member on the House Foreign Affairs Committee.