Need help on the Renaissance costume?

So This year we are creating our own Renaissance faire and we have to dress up. Ive been thinking about being in middle class or a peasant but I don't know where to buy the clothes since I don't know how to sew. So tell me places you can buy pieces/parts of the costume for cheap prices and it would be best if it was sold in the Glendale galleria in la ca. Please please help me and thanks a billlion!!!!