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Grammys Video: Katy Perry Reveals the Secret to a Happy Marriage

Katy Perry brought her own Grammy to Sunday's award show — her 90-year-old grandmother, who wore Armani and walked with a blinged-out cane (a birthday gift from Katy). The newly married pop star also revealed that her husband, career goofball Russell Brand, is "absolutely a romantic." What's their secret? Plus: See what Perry thought of Lea Michele's rendition of "Firework" on Glee. Watch the full interview after the jump.

Gina DiNunno

Katy Perry brought her own Grammy to Sunday's award show — her 90-year-old grandmother, who wore Armani and walked with a blinged-out cane (a birthday gift from Katy). The newly married pop star also revealed that her husband, career goofball Russell Brand, is "absolutely a romantic." What's their secret?

Plus: See what Perry thought of Lea Michele's rendition of "Firework" on Glee.

Watch the full interview below:

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