siriusly riddikulus cousins

bringing your favorite fandoms to life

At Siriusly Riddikulus Cousins, we specialize in creating custom handmade t-shirts and stickers that resonate with your favorite fandoms. Each design is crafted with love and care to bring your beloved characters and themes to life. Embrace your uniqueness with our exclusive collection. Explore our ever-growing mix of fandom-inspired shirts and stickers, meticulously crafted to celebrate your passion for the extraordinary. 

siriusly riddikulus cousins logo

we're happy you are here

Meet Wendy and Amy, the imaginative minds and dedicated cousins running the show. 

We are ready to bring your favorite fandoms to life through custom, handmade creations. Explore our website and discover a mix of fandom inspired shirts and stickers. Whether you're a Potterhead, Swiftie, or love those Bat Boys, we've got unique items that help celebrate your love for the extraordinary.

Follow us on social media for behind-the-scenes glimpses, special offers, and updates on new arrivals. We love connecting with fellow fans and sharing the joy!

Have a special request or a fandom we haven't covered yet? Drop us a message - we love a good challenge!

siriusly loving your favorite fandoms

custom fandom apparel options

Indulge in our exclusive collection of custom fandom shirts that showcase your dedication to iconic characters and worlds.

personalize your devices

Elevate your style with our meticulously handcrafted stickers featuring designs inspired by popular fandoms.

personalized designs for you

Experience the thrill of owning personalized designs that reflect your unique fandom preferences and storytelling passions.

explore our fandom collections

Whether you are looking for designs connected to your BookTok boyfriends, favorite song lyrics, your wish to be a wizard or more, we have you covered. We are always making additions to our collections and want to hear ideas that you have, too!

influenced by Booktok

grab the aux cord

not miserable, but magical

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don't be a stranger!

Have a question, an idea, or perhaps a special request for a fandom we haven't covered yet? Drop us a message - we love to connect over a good challenge!

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