From your engagement party to the bachelorette, there are plenty of occasions to celebrate with a cocktail or two leading up to your big day. (Not mention on your actual wedding day. Cocktail hour, anyone?) But when you're putting in the effort to stick to a pre-wedding workout, diet, and skin-care routine, you don't want to throw it all away by guzzling down drinks laden with sugar and hidden calories. We talked to registered dietitians to get the skinny on healthier alternatives to classic boozy beverages. The best part? Less sugar means fewer hangovers!