I just did a VR in May for my 10 year. I totally understand your question. I didn't know what to wear. I knew I didn't want to wear my original wedding dress and I couldn't find a nice dress I liked off the rack. Then I found out I could get pictures in front of the castle and the next thing you know I am buying a wedding dress - that said it was a very simple wedding dress - no train, no lace, no beed, no appliques (sp?) just a white dress. I also did not go with a veil - but at the last minute chose to do a tiara, which turned out very nice. We had our service at the WP which adds to the formality, if you are on the beach you may choose something else. Pick whatever you feel you like the best - it's your day!