I'm using layered navigation for a category in my magento store. But some products have multiple categories.
Say I have a category she. Again I have some other categories like t-shirt, cosmetics etc. A t-shirt may have both t-shirt and she categories. Again a cosmetics item may have both she and cosmetics categories. So when I'm displaying she category page, I want to show t-shirt and cosmetics categories in layered navigation. When user clicking on one of those categories (say t-shirt) it will show all the t-shirt which also fall in she category.
How to do this?
EDIT: Here one thing I need to make clear. she, t-shirt, cosmetics all are independent categories. none are sub category of another.