The 'Firework' hitmaker married renowned womaniser Russell Brand in October and says she always makes an effort for her spouse.
She said: "I have secrets and magic tricks, of course. I can't share them because then you'd all know. But let's just say I'm not shy. And I never wear sweats. Ever."
The brunette beauty also plans her schedule carefully so she and Russell can spend quality time together away from the pressures of their working commitments.
She added: "I also make sure we have time. We're both busy but this is a huge part of my life. I call the shots on my schedule. I put in breaks. There are weekends for Russ and weekends for me and my friends. Neither of us ever wants to lose ourself or the other in fame."
Though Katy and Russell are currently residing in Los Angeles, they are house-hunting in the 'Get Him to the Greek' star's native London as the US singer wants a British passport.
She told Grazia magazine: "We have a place together In America but we want to find somewhere here. I want a British passport."