Blake Lively wears hers with a wide belt over jeans and heels, which looks elegant but not too dressy.
For a dressier look, try pairing your button-down with a skirt and heels, like Victoria Beckham does here.
Kate Moss wears hers with this season's hottest trend, the waistcoat...
Rachel Bilson adds a summer scarf and has her collars & cuff peeking out from under a sweater.
If you have other suggests for how to wear a white button-down, leave a link to your set in the comments!