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Custom birthday shirts are personalized t-shirts designed for birthday celebrations. Designs typically include age numbers, birthday themes, or celebratory messages. Print-on-demand production allows ordering exact quantities needed for party guests. Popular for milestone birthdays, family celebrations, and group events.


Kids' birthday parties need coordinated outfits for photos. Custom shirts with ages, names, or party themes make the birthday kid stand out in group shots. Let parents order matching shirts for siblings and friends instead of buying bulk quantities before knowing which kids will actually attend.
Turning 21, 30, 40, or 50 deserves more than generic party supplies. Custom birthday shirts for the celebrant and their group turn bar crawls and dinners into memorable events. Everyone orders their own size, so you skip coordinating a group order the week before the party.
Birthday content performs well, and custom merch extends the celebration. Limited-edition birthday shirts create urgency for your audience to buy during a specific month. Print-on-demand means you offer birthday drops annually without warehousing unsold inventory from last year's design.
Multi-generational gatherings need shirts that work for ages 3 to 83. Custom birthday designs for milestone celebrations during reunions give everyone something to wear in family photos. Share a shop link so relatives order their own instead of you collecting sizes from 40 cousins.

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Selling custom birthday shirts online is simple with platforms like Fourthwall. Here’s how you can get started:
With Fourthwall’s print-on-demand service, you don’t need to worry about inventory management.
The platform takes care of the printing, fulfillment, and shipping, ensuring that your birthday shirts are quality printed and shipped directly to your customers.
With Fourthwall, you can create a wide variety of custom birthday shirts for any occasion. Here are some ideas for birthday shirt designs:
Whether you're selling birthday shirts for a party, unisex designs, or special occasions, Fourthwall’s easy-to-use platform lets you create and sell custom birthday shirts with vibrant designs and personalized touches that your customers will love.
Plus, with free shipping and no minimum orders, it's easy to get started and sell directly to your audience.
If you're looking to create and sell custom birthday shirts, Fourthwall is the best website for the job. Here’s why:
Fourthwall provides an all-in-one solution for selling custom birthday shirts, including print-on-demand services, free shipping, and customer support. You can upload your designs, start selling personalized birthday shirts, and fulfill orders with ease—all without managing inventory or shipping.
For those interested in other options, popular alternatives include:
Absolutely! Fourthwall's product designer tool and extensive catalog allow you to design and sell a wide range of custom print-on-demand products, including custom birthday shirts, online.
Here’s what you can create:
With Fourthwall's all-in-one e-commerce platform, you can design your products, build your website, and start selling—all from one place. Plus, Fourthwall takes care of customer support, taxes, and logistics, so you can focus on creating.
Creating your own birthday shirt on Fourthwall is cost-effective and straightforward. There are no monthly fees, no upfront costs, and no contracts! You have the flexibility to set your own margins.
Here’s how pricing and splits work for custom items in our catalog:
For more details about pricing and the various options available, check out our pricing page.
Yes, Fourthwall has native YouTube Merch Shelf integration. Your products appear directly below your videos for viewers to browse and purchase.
See our YouTube Merch Shelf setup guide for requirements and instructions.
Yes, Fourthwall is the only platform with Twitch Gifting. Viewers can gift your merch to other viewers during live streams via random giveaway. The FourthwallHQ bot announces gifts in chat, and viewers type !enter to win.
Creators see up to 30% increases in sales with this feature enabled.
Birthday Shirts delivery typically takes 7-10 days for US orders. Fourthwall has fulfillment partners in the US, UK, EU, Canada, Australia, and Japan.
Shipping costs are dynamically determined by package size and destination.