The bestselling children's books series for over 50 years! Mr. Birthday is very good at organizing birthday parties. He likes to make sure that everyone he knows has a party on his or her birthday. But there seems to be an important birthday coming up that Mr. Birthday knows nothing about ... Mr Men and Little Miss Celebrations introduce children to all the exciting occasions that people celebrate including birthdays, Christmas, Halloween, Easter, sporting events ... and even a trip to the moon.