Why: I have heard that this is the "only bridal show worth going to." I can't completely endorse that statement as I have never been, but Baltimore Magazine usually gets it right. They will have refreshments for you while you peruse the vendors (including one of my favorites, The Floral Studio). Also, you'll get a fab gift bag and some great give-aways!
Bonus: You can bring a dress with you to donate to The Priceless Gown Project, an organization that provides prom dresses to girls that would otherwise be unable to attend.