Lady Gaga arrives at Roseland Ballroom on March 28, 2014 in New York City. Theo Wargo / Getty Images / AFP
Lady Gaga, left, and fashion designer Donatella Versace arrive to the attend Atelier Versace Spring-Summer 2014 Haute Couture fashion collection on Jan. 19, 2014 in Paris. Zacharie Scheurer / AP photo
Lady Gaga, centre, and R Kelly perform at the American Music Awards held at the Nokia Theatre L.A. Live, in Los Angeles on Nov. 24, 2013. John Shearer / Invision / AP file
Lady Gaga arrives for a presentation of her upcoming new album Artpop at a fan event at the Berghain club in Berlin on Oct. 24, 2013. Markus Schreiber / AP photo
Lady Gaga performs during the 2013 MTV Video Music Awards in New York August 25, 2013. Eric Thayer / Reuters
Honoree Lady Gaga attends the 23rd Annual Glamour Women of the Year Awards hosted by Glamour Magazine at Carnegie Hall on Nov. 11, 2013 in New York. Evan Agostini / Invision / AP
Lady Gaga arrives at the launch of her new fragrance Fame at Harrods on Oct. 7, 2012 in west London, UK. Joel Ryan / Invision / AP
Lady Gaga joined Tony Bennett for a duet of The Lady Is A Tramp for his DUETS II CD. PRNewsFoto / RPM / Columbia Records, Josh Cheuse)
An egg-like container with singer Lady Gaga inside arrives for the 53rd Annual Grammy Awards at the Staples Center in Los Angeles, California on February 13, 2011. Robyn Beck / AFP photo
Lady Gaga holds her Best Female Video Award and Best Video With A Message Award in the press room at the 2011 MTV Video Music Awards (VMAs) on August 28, 2011 at the Noika Theatre in downtown Los Angeles, California. Frederic J. Brown / AFP photo
Lady Gaga gives a press conference ahead of her showcase concert at the Marina Bay Sands in Singapore on July 7, 2011. Wong Maye-E / AP photo
Lady Gaga attends the amfAR New York Gala co-sponsored by MAC Cosmetics to Kick Off Fall 2010 Fashion Week at Cipriani 42nd Street on February 10, 2010 in New York, New York. Larry Busacca / Getty Images / AFP
Lady Gaga wears her controversial meat dress, as she arrives in the Press Room after winning eight 2010 MTV Video Music Awards including Video of the Year at the Nokia Theater in Los Angeles on September 12, 2010. Mark Ralston / AFP photo
Musician Lady Gaga poses backstage with her awards for Best Dance Recording and Best Electronic Dance Album at the Grammy Awards on Jan. 31, 2010, in Los Angeles. Matt Sayles / AP photo
Lady Gaga performs at the launch of VEVO, the world’s premiere destination for premium music video and entertainmentat Skylight Studio on December 8, 2009 in New York City. Theo Wargo / Getty Images
Lady Gaga performs at the Glastonbury Festival 2009 in south-west England June 26, 2009. Luke MacGregor / Reuters
Lady Gaga accepts the award for Best New Artist during the 2009 MTV Video Music Awards at Radio City Music Hall on September 13, 2009 in New York City. Christopher Polk / Getty Images / AFP
Lady Gaga join the 90210 cast to debut the new T-shirt line, at Kitson Studio in West Hollywood, California on Oct. 22, 2008. Tammie Arroyo / UK Press