The 27-year-old Bad Romance hitmaker admitted that her whacky outfit choices are what stops her from getting depressed.
Speaking to Fashion magazine the star said: "Fashion is that thing that saved me from being sad.
"I've always cared about my costumes and my clothes. When I leave my apartment I like to look pretty for my fans but not [in a] hot sexy girl [way] - I don't care about that. I just want to make you feel something with what I wear.
"I want you to feel happy and enjoy the theatre of my life the way that I do. No matter what happens with my music and wherever I go - that heart of that glamorous girl in New York will never be gone.
"This is who I am and it's never been an act and it's never been marketing. This is me all the way to my core and fashion is a big part of my life."