Give it to my mother in law..lol damned women shrunk the heck out of a nice sweater I one had. Came back the size of a tea cosy and thread bare.
Seriously though, A hot wash will shrink it. Try a few gentle/hot washes over a couple of weeks untill you have it right, then wash it cool or by hand.
Failing that.. swap it with a fat guy (right here!) for something else?