Katy Perry showed up with her mom, her grand mom (who just turned 90) and hubby Russell Brand on the red carpet at Sunday's 53rd Annual Grammy Awards. And it seems that the California Gurl mother really wants to be called grandma!

"Russell loves kids. I just can't wait for them to have babies. Grandma, here we come!" Mary Hudson told People.

According to her, they make a great couple but she wonders -and so do us- how they manage to keep this relationship working given their crazy schedules.

"I don't know whether it's private jets or what, but they make it work," she laughed.