Make sure everyone you know is invited to the biggest event of the year with 21st birthday invitations. Personalise your invites with your images, text and photos to match your event or even theme. Most of Zazzle's invitations are made within 24 hours of being ordered in the UK. So you will receive them to send them out as soon as possible. While you're here, why not check out some of the other invitation designs on Zazzle on the main invitations page.