Being a princess isn't all about getting pampered, you also have to be courteous to your faithful subjects. After the party, use the Princess Thank You Notes to let party guests know you lived happily ever after. Each pattern-matching Her Royal Highness thank you notes are sold in packs of 8 with 8 white envelopes. The design features a pink heart border and blue butterflies along with the words " Thank You. " What a sweet and simple way to end your child's royal birthday!