Okay kiddo, so you know when you have a birthday party and you want all your friends to come celebrate with you, right? Well, when grown-ups get married, they want to invite all their friends and family to the wedding to celebrate too.
But instead of just telling people the details of the party, they send out special cards called wedding invitations. These cards have all the important information on them, like the date and place of the wedding, along with the names of the bride and groom.
Sometimes, the invitation will also have pretty designs or pictures on them, to make them even more special. And when people get the invitation, they know they've been invited to the wedding and can start getting ready to go!
So basically, a wedding invitation is like a fancy card that tells people when and where the wedding will be. Cool, right?