Boyfriends Sisters Wedding What Should I Wear To My Boyfriends Sisters Wedding?

What should i wear to my boyfriends sisters wedding? - boyfriends sisters wedding

I have no idea what to wear. What colors and what a dress? The wedding will take in the night and the wedding party, I'm guessin the afternoon. I need a color that are conquering something to wear too. Oh, and marriage is the new year ...

Please help!