By Thaís Marchese

New Brand: Sister Paper Co.

Collage of Sister Paper Co. hand-painted greeting cards, including designs of camping under the stars, strawberry and lemon fruit shapes, Bigfoot in a sunset forest, olive jar pun card, mountain anniversary scene, whimsical mushroom birthday card, and cyclist in a desert sunset—paired with kraft envelopes and styled with pens and stamps.

Sister Paper Co. Hand-Painted Cards That Make Every Message Magical

Mushroom Birthday Card by Sister Paper Co - Sleepy Mountain

We’re so excited to welcome Sister Paper Co. to our shop—a female-founded, UK-based stationery brand creating gorgeous hand-painted greeting cards for every occasion. Each design starts as a one-of-a-kind artwork, featuring nature, adventure, and just the right dose of whimsy. Think forest mushroom parties, stargazing camping trips, and ripe strawberries that look almost good enough to eat.

Lemon Zest Birthday Card by Sister Paper Co - Sleepy Mountain

Every card is printed in small batches on sustainably sourced paper, making them as kind to the planet as they are beautiful. Whether you’re sending birthday wishes, celebrating love, or slipping a little magic into someone’s mailbox, Sister Paper Co. makes it easy to deliver joy in style.

Legendary Bigfoot Birthday Card by Sister Paper Co - Sleepy Mountain

Shop the full collection now →

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