Create magical moments with matching sibling outfits

There's something special about seeing siblings dressed in matching clothes. It brings smiles, evokes warm feelings and creates memories that last. At That's Mine, we've created a collection of sibling clothes that makes it easy and natural to match your little ones - with a focus on comfort, style and quality.

Why choose matching sibling clothes?

Matching sibling clothes aren't just about visual appeal – they also strengthen the bond between siblings. When little brother and big sister wear the same soft sweatshirt or each have their own version of a cozy sweater with slight differences, a sense of togetherness and community is created.

Sweaters for big brother and big sister

We know how proud children can be of their roles as siblings – especially when they get to show it off. That's why in our collection you'll find both big sister shirts and big brother shirts , designed with loving details and in colors and motifs that children love. The shirts are made of organic cotton and have a relaxed fit, so they're comfortable for both play and family photos.

Soft, sustainable and child-friendly

All our products are created with care – both for your child’s comfort and for the planet. Our sibling clothes are made from organic cotton , which is soft, breathable and gentle on your child’s delicate skin – and made to last, even after many washes.

Perfect for gifts and anniversaries

A set of sibling clothes is an obvious gift idea, whether it's for a birthday, maternity gift or just a loving surprise. The collection is available in different sizes, so you can match small and big siblings across age groups.

Mix and match – your way

At That's Mine we believe in making it personal. Put together your own set of matching sibling clothes with tops, pants, dresses and accessories that can all be mixed and matched. Many prints are repeated in both baby and children's clothes for a consistent look.

Sibling love in textile form

When your children dress in sibling clothes from That's Mine, the clothes become more than just practical. They become part of your family history – an expression of togetherness, play and love that can be felt in every stitch.