The "Poker Face" singer claims to be so dedicated to her career, she uses all of her money to fund her elaborate stage sets and improve her musical skills.
She said: "I live right here in the moment. I live on stage. I don't own a house, I don't spend money on those things. I live out of a suitcase and I make music and art and I spend every dollar that I make on stage - that's it."
The star is so focused on her work, she rarely takes time off but says her idea of a treat when she isn't working is a bowl of pasta.
She explained to more! magazine: "I don't have that many days off. But Sundays used to be the day my family would always make fresh food at home. So sometimes I like to let myself eat what I want on a Sunday."
"I'm on a very strict healthy pop star diet. I don't eat bread, just vegetables and salad and fish. Eating like that is much better for me anyway but on Sundays I sometimes eat pasta."
