Understanding Formal vs Black Tie: What's the Difference? What's the difference between black tie and formal? Semi formal and casual? Here, we break down the top wedding guest dress codes, so you can be stylishly outfitted for the occasion. Click the link WHITE TIE VS. BLACK TIE: A WOMAN'S GUIDE TO FORMAL WEAR GLS Collective Can someone post examples and explanations of the different dress codes? : r Weddingattireapproval Black Tie, Semi Formal or Cocktail? A Guide to Wedding Guest Attire in San Antonio Black Tie Wedding Guest Dress Ideas: Formal Wedding Guide