Halloween is, hands-down, the hottest holiday in America. Not only are there more costume parties in the month of October than you can handle, but each and every one is packed-full of good girls getting as slutty-looking as possible. So instead of just showing you hot costumes, we thought we’d focus in on the best bits: the cleavage. Here is our Sexy Halloween Costume Cleavage Collection. Now, maybe you can help give your girl some suggestions for what to be this Halloween.