If you need a new white dress, the best thing to do is wait until August/September. This is when the stores put their summer clothing on sale. When I pledged, I found my white dress on sale at Contempo for $10 (I think it was originally $39.99).
Ritual isn't a fashion show. It's supposed to be a bonding time with your sisters. I've never understand the girls who would go out and try to find the most beautiful and expensive ritual dress they could find. Nobody else is going to see you in the dress besides your sisters and if they are truly your sisters, they won't laugh at you for wearing a frumpy white dress.
