While the phrase "dressy casual" might sound contradictory, it's used to identify the style between casual and formal attire. It's a dress code that calls for special event clothing that's trendy, relaxed and comfortable. Think of the dress code as attire that is dressier than what you would wear to work, but not as formal as what you would wear to black-tie or formal events. The term "dressy casual" can also appear in different forms on invitations; some couples may choose to write smart casual, upscale casual or fancy casual — but they all generally mean the same.