Chinese (i think?) > English... what's on my mom's shirt?

My mom gave me a bunch of her old t-shirts for a craft project I'm working on. This is the design on one of them. She can't remember where she got it, so neither of us have any idea what it says. I was curious if I could find out what it says & then figure out from that where she might have gotten the shirt. Can anybody help? Thank you!