****EDIT!****
Download from here, since it has been removed from FPSBanana:

COMMENT IF YOU DOWNLOAD IT!

Bill's Beret replacement for the Ghastly Gibus.

If you haven't preordered L4D2, but you find the Bill's Beret looking good, and you have the Ghastly Gibus, then download this skin!

You can find the download page at:

And the SteamForums' thread at: