As my sister's Matron of Honor, I am hosting her girls only bridal shower. It is going to be a relatively large shower with 48 guests. I am hosting the shower at our mother's house, outside in her (incredibly gorgeous) backyard. It will be a seated buffet luncheon. Since it is a shower, and not a formal party, I'm not sure if I should make seating arrangements for the guests or let them sit where they want. Because it's such a large party I'm concerned that people may feel lost if I don't assign seating, but I don't want the party to seem too stuffy either. Please help!