Activity for Consuelo

I am using Lavender for my wedding (table linen) what color suggestions do you have for the overlay & the chair with the sashes to match?

I'm new to this forum, so I hope I'm doing it right. How does one set a theme? I really don't have a theme. I know I want my day to be full of fun. I am renting an artist to do caticatures of the guests, a candy station, and possibly a photo booth...