Donut Birthday Shirt FABpod. 8th Birthday TShirt 8 Eight Unicorn Donut Birthday Shirt. This tee says Donut You Know Im Turning 8. If you are in love with donuts and unicorns then this cute birthday donut shirt makes a great gift for the birthday girl and can be worn for a doughnut themed party. If you click on our brand you can view other options as well as matching family tees.