Shipping Methods not showing up on all products

Hi I have 12 different shipping methods. The shipping methods are showing up for some of the products but not all. The categories "Sexy costumes" is one of the categories that shipping does not show up. www.glitzyglamazon.com/fashion/sexy-costumes.html but "Eyes" works perfectly www.glitzyglamazon.com/beauty/eyes.html
Have searched the forum and documentation, but can't figure out what I'm doing wrong.

Thanks,
Garnett

If you don't set a weight for a product, it will be considered as virtual and thus won't require a shipping method.