Birthday invitations are cards or digital messages sent to invite guests to a birthday celebration. They typically include important details such as the date, time, location, and theme of the party. Invitations can be designed in various styles, from simple and elegant to colorful and fun, depending on the birthday person's preferences. Sending out birthday invitations is an essential part of party planning, as it helps ensure that friends and family know about the event. Many people choose to personalize their invitations with images, colors, and wording that reflect the interests of the birthday person, making the invitation special and memorable.