Marilyn Monroe Halloween Costume

I am looking for a costume of Marilyn Monroe for girls aged 11 to about13 where can you find?

For a girl, I do not know about.
cheers

Part Store, Toys R Us, and even Wal-Mart, Target orevenK-Mart, but the best is in your party as a "supermarket", or "Costume Store" Good Luck, Hollywood

Just about anywhere, although I'm not sure why a 11 year old would dress like Marilyn Monroe. Try buycostumes.com

Perhaps partycity or u can just try to do yourself, like buying a white wig and a dress white makeup Timey old or something!