The rules are pretty simple. Just pick your favorite fashion blog post and create a Polyvore set to illustrate it. For example, here's a blog post about plaid for which you could create a hot plaid set.
Don't forget to include the link to the blog post in your set's description box, because if you don't, your set will be disqualified.
iCiNg - Gala Darling
DC Goodwill Fashion Blog
Independent Fashion Bloggers
Click here to enter the Style a Fashion Blog contest. Good luck!