Birthday T-Shirts & Shirts

At Zazzle, you will find thousands of different designs created by our community of Independent Creators. From designs with funny birthday quotes, designs celebrating round numbers, 'Birthday Boy/Girl' designs, photo collages, ‘Happy Birthday’ illustrations and many more. Browse through all of our designs today and pick your favorites.

Yes, you can and that’s where all the fun is! Simply select your favorite design, click the ‘Edit Design’ button and you will be directed to our customization tool where you can start customizing. Add images, photos, text or change colors and fonts, and create your perfect custom birthday shirts.

Most of our t-shirts are made from 100% cotton, which is both durable and soft - a great combination if you're looking for that casual wardrobe staple. All material information is available on the product pages, so make sure to check it out before selecting your items.

At Zazzle, we offer Adult S, Adult 6X, and every size in between. Make sure to select your size on the right-hand side of the product page. If you are unsure what is your size, our Size Chart will give you correct measurements of each size.