Two toned denim - Shades of blue do not have to match. I think it looks better when you mix a lighter shade with darker denim to add contrast. Why not wear the latest trend 'boyfriend jeans' with a simple tee with a darker denim jacket?
Layer - Pair chambray with darker denim, or the same tone denim can be broken up with a simple tee or embellishment like a chunky necklace or scarf.
More double denim style can be found over on my pinterest 'style' page.
Will you or could you wear double denim?