If you've got a medium/large head and want a straw trilby, then Topman have got one for you for £3.00. Use PARCEL to get free delivery.
If you're head is small/medium, unfortunately you're out of luck... they've sold out of this size.
Picture doesnt show on link, but go to Accessories on the left and there's a bigger picture there.
EDIT 19:47 Sorry, they've just sold out