Activity for Jennifer

Is there a rule of thumb for ordering extra meals when giving your caterer the final guest count? I have 134 confirmed guests but I have no idea if I should order extra for people who have not RSVPd. Plated dinners are not cheap. :-(

I found myself purchasing an ivory dress and now I'm completely lost on what would be the most chic choice for my groom and groomsmen. My colors are blush pink, champagne, charcoal and navy so black is not an option. Personally, I find ivory shirts...