When trying to cut calories and follow a diet, alcohol is one item that is always tough to cut out.  While the best option is to not drink at all, for most people this is not reality.  There are now several low carb beers on the market with everything from Michelob Ultra, Bud Select, Etc. but your best options may be to stick to wine or liquor.  Wine is the best option at about 100 calories for glass and under 5g of carbs per serving.  To stick with liquor, Vodka, Gin, Whiskey and White Rum all have under 100 calories and 0g carbs per serving.  If drinking liquor straight is not for you, try a diet soda or even soda water.  Even with these diet friendly choices it is still key not to go overboard (for your diet or the hangover) but try these options next time rather than the Light beer.