New Delhi, May 4 -- Lady Gaga gave a free concert for over 2 million fans on Copacabana Beach on Saturday night. The show was the biggest of the pop star's career.

"Tonight, we're making history. (...) Thank you for making history with me," Lady Gaga told a screaming crowd.

The American pop star kicked off the show with her 2011 song "Bloody Mary." Cries of joy rose from the tightly packed fans who sang and danced shoulder to shoulder on the vast stretch of sand.

Lady Gaga performed her classic hits, including "Poker Face" and "Alejandro," switching between an array of dresses, including one with the colours of the Brazilian flag.

The Copacabana Beach show was the second such show organised by Rio de Janeiro's City Hall. Concert organ...