One invitation, two invitation, three invitation, four invitation and much more! A great addition to birthday party supplies, this stationery features all of the most popular characters from the world of Dr. Seuss™ and space to add celebration details. To really bring your Seussian theme to life, shop coordinating tableware and décor on this website! Includes 8 invitations and 8 envelopes. Paper. 5 1/2" x 4 1/2" ™ & © Dr. Seuss Enterprises, L.P. All Rights Reserved.