Is there any way to save my rayon shirt?

i have a top that i love and i totally forgot it was dry clean only and hand washed it with woolite. its something like 89% rayon and 11% polyester. i knew something was wrong as i was washing it, then checked the tag and it says "dry clean only" with a circle and a P. it looked a lot smaller from what it was, shrunk. its meant to be an oversized shirt so i guess its not a huge deal, but now the material feels stiff and the shape is lost. is there anything i can do to save this shirt or should i just throw it out?