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The pop star Katy Perry, 39, is demanding that all women say “thank you” to singer Madonna, 66, who she describes as being “the greatest.” Perry Praises Madonna Perry, set to turn 40 next month, opened up in a new interview about how the controversial Madonna helped her early in her career.

Katy Perry has revealed Madonna was "super nice" to her when she first started in the music industry. The Firework singer explained she'd had to earn the veteran pop star's support. She went on to describe how Madonna had mentioned her 2007 single Ur So Gay during a radio interview,