Birthday Card - One Year Old Girl Happy Birthday to her very yummy gorgeousness who is one! £2.50 Lets shout Hip, Hip Hooray, she's one today and we need to say Happy Birthday! The first year has flown by - let's have a party! A few sparkly bits have been added to make it even more special! The card is a perfect square (14.5cm x 14.5cm) and comes in a white envelope, cello wrapped for protection. It's blank inside for your own special message. See the full range of cards here.