Making sure your whole outfit is pulled together is very important. Casual doesn't have to be sloppy. Either if you want to dress-down for a cup of coffee at Starbucks or dress-up for a formal dinner, putting in a little effort on what to wear is worth your time.
Shirt from Allsaints Spitalfield
High-waist pant from Forever 21
Belt from target
Aviator sunglasses from RayBan
Sock from Icing
Mary-Jane shoes from Jessica Simpson