Celebrate your birthday in style! These invitations are printed on white iridescent cardstock and can be backed with a shimmering coordinating cardstock. Add an outer fold for an extra-special touch! Invitations measure 5 3/8 " x 7 3/8" Outer envelope measures 5.5" x 7.5" Optional Swarovski crystal can be added Envelopes may be printed with your two-line return address (up to 32 characters/spaces per line) if desired. Please order carefully. Orders for personalized items cannot be canceled, and personalized items cannot be returned. Please allow an additional 1-2 weeks for delivery of personalized stationery orders.* indicates required information.