It's time to start shopping for Spring - and denim on denim is a trend to watch out for. Demonstrated at its best on the Chloe Spring/Summer 2010 runaway, denim is back in a  big way, so pull out those old Levis, and don't be afraid to layer them with your dad's old chambray shirt. Jean shorts and a denim shirt? All right. In a world where denim was previously only allowed to be one part of your outfit (usually, the bottom), the beloved American material has now been reintroduced in the fashion world as the perfect layering piece - in any form of garment.

Check out some favorite affordable finds below (all from Charlotte Russe, Forever21 and Old Navy).