Does anyone know how to shrink a shirt? I bought a shirt and the size is one size big. And...

I bought a shirt and the size is one size big. And its baggy as hell on me. As I own lost some weight. How can I shrink it? Its a dickies twill shirt. Made of cotton and polyester. I cant rob it back because I bought it from Ebay from some guy.
Guys, do u resembling it when us women...
Answers:    Get it raining, wring it out and throw it in the dryer on hot for an hour

that should help out, if not, repeat until it fits right
HELP RED NAIL POLISH ON YELLOW CarPET!?
bath in hot dampen a few times that should help