A Personalized Polaroid Photo Theme Invitation. This is a great invitation for any milestone birthday. Add a photo from then and now. It’s also great for a double birthday party! Personalize! Capture the personality of the party with a greeting or message specific to them. Sizing: Standard invitations are 5″ x 7″. Our graphic artists work their magic on each invitation to create the best invitation possible. Envelopes are included with every order. Proofs: You will receive a proof of your order by email within 2 business days.