vhdos - I will be shocked if everyone at your party has on nothing but bright white. I bet you'll see a lot of off-white, white with color splashes, etc. I think the second dress will be absolutely fine. Post pics though!!
In other news, I wore the red dress to a banquet Saturday night with the guy... not sure if it caught his eye. Haha! I can't tell but I'm sure he's just not that in to me. Or he could be afraid of me =, or just unwilling to make a move since I'm still a student (though not his any more). lol. Ah well! I loved the dress and got tons of compliments, but I have to admit I felt a little risque!