Lady Gaga: from Poker Face to Mother Monster

Lady Gaga Photograph: Sarah Lee

Lady Gaga performs live at the Brit awards 2010 Photograph: Gareth Cattermole / Getty Images

Lady Gaga performs at BankAtlantic Center, Florida on April 12 2011 Photograph: Larry Marano / Getty Images

Singer Lady Gaga speaks at a rally in Portland, Maine on 12 September 2010, urging members of the senate to repeal the rule banning gay people from serving in the armed forces Photograph: Joel Page / Reuters

Lady Gaga performs at Lollapalooza in Chicago, August 6 2010 Photograph: Tim Mosenfelder / Getty Images

Lady Gaga poses during a press conference to promote her new album Born This Way in Mexico City, May 6 2011 Photograph: AP

Lady Gaga wears her controversial meat dress at the MTV Video Music awards 2010 Photograph: Mark Ralston / AFP / Getty Images

Lady Gaga performs new single Judas in Cannes, France, May 11 2011 Photograph: Marc Piasecki / FilmMagic

Lady Gaga performs at Capital FM's Jingle Bell Ball at the O2 Arena in London Photograph: Yui Mok / PA

Lady Gaga performs in New York City, 8 December 2009 Photograph: Theo Wargo / Getty Images for VEVO

Lady Gaga at the Royal Variety Performance 2009 in Blackpool, England Photograph: Ken McKay / Rex Features

Lady Gaga on the Monster Ball tour, 14 September 2010 Photograph: Rex Features

Lady Gaga at Paris fashion week, March 2 2011 Photograph: Gonzalo Fuentes / Reuters

Lady Gaga on the red carpet at the Brit awards 2010 Photograph: Ian Gavan / Getty Images

Lady Gaga gets her horns out for the Guardian's Weekend magazine Photograph: Guardian