Kids Rainbow Unicorn Onesie

£34.99

  • Fabric: soft flannel, warm without being stiff
  • Details: pastel blend of pink, mint, yellow and blue with white stars and a purple horn
  • Cut: loose enough for a whole evening of play and a full night of sleep
  • Versatility: fancy dress days, birthdays, winter holidays, bedtime
  • Washing: machine washable and easy to look after
  • Ultra-soft fabric | Warm and comfortable
  • Pyjamas and costume | Two in one
  • Any occasion | Bedtime, parties, film nights
  • Gift-ready | One they’ll actually wear
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Size Chart

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  • Fabric: soft flannel, warm without being stiff
  • Details: pastel blend of pink, mint, yellow and blue with white stars and a purple horn
  • Cut: loose enough for a whole evening of play and a full night of sleep
  • Versatility: fancy dress days, birthdays, winter holidays, bedtime
  • Washing: machine washable and easy to look after

Every colour at once lands on the Girls Rainbow Unicorn Onesie

When a child cannot choose between pink, mint and blue, the rainbow unicorn onesie for kids settles the argument by using all of them. The pastel shades melt into each other across the body and sleeves, and white stars are scattered over the whole print like a night sky in soft colours.

A purple horn tops the hood, with ears standing up on either side of a printed face. The zip front makes dressing quick before school photos or a party, and the cuffs sit close at the wrists so the sleeves never end up in the way.

Boys Rainbow Unicorn Onesie for fancy dress days and cold bedrooms

These kids rainbow unicorn pyjamas do double duty as fancy dress and as real sleepwear. The cut is loose enough for a whole evening of play, the flannel is warm without being stiff and the hood stays up while your child runs from room to room.

The gradient also means no two photos look alike, since the colours shift with every fold and every pose. Order it for a birthday, a school dressing up day or a winter holiday where pyjamas matter more than clothes.

Rainbow versions for everyone

The baby rainbow unicorn onesie puts the same pastel blend on the smallest family member. For a single bright shade instead, the kids pink unicorn onesie keeps the classic look. Find every mane and horn in the unicorn onesies collection.

Frequently Asked Questions

They’re made to keep you warm on the sofa through autumn and winter, so yes, they’re cosy. The relaxed fit lets air move around, though, so you won’t get that stuffy feeling you get from tight pyjamas.
Machine wash at 30°C on a gentle cycle. Turn them inside out and pop them in a mesh laundry bag to protect the hood. Skip the tumble dryer and the iron. They air-dry quickly and fluff right back up on their own.
Yes, every onesie we sell is unisex. The roomy cut works for men and women alike, our kids’ styles fit girls and boys just the same, and our baby sizes are cut the same way for everyone. Just check the size chart to find your fit.
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Kids size chart (measurements in cm)

SIZECHILD'S HEIGHTCHESTSHOULDER WIDTHSLEEVE LENGTHONESIE LENGTH (EXCLUDING HOOD)
3 - 4 years88 - 10288414182 - 85
5 - 6 years103 - 11592424392 - 95
7 - 8 years116 - 125944347102 - 105
9 - 10 years126 - 137964449112 - 115
11 - 12 years138 - 148984554122 - 125