USPS Wedding Cake Two Ounce Forever Stamps - Sheet of 20 Brand new sheet of 20 stamps Valid for oversized cards, 2 ounce invitations & more. Rate is 71 cents as of January 21, 2018. Beautiful stamp to accompany the Wedding Roses forever stamp First class 2 ounce rate, or 1 ounce "rigid" surcharge rate Features wedding cake design