Rainbow Unicorn Party Supplies, Decorations & Favors for Girls

Planning a unicorn birthday party for your daughter? You're in the right place! Our Rainbow Unicorn collection is full of playful pastel magic — with soft pinks and purples, pops of rainbow color, and all the whimsical details that birthday girls are absolutely loving right now. Think easy unicorn party decorations that look gorgeous in photos, unicorn paper food trays that make the treat table feel extra special, and unicorn party favors your guests grab the second they walk in. Many of our rainbow unicorn party supplies can be personalized with your child's name or even their face — including our custom face unicorn temporary tattoos that make the most magical personalized party favor, and our unicorn paper food trays that instantly elevate any treat table setup. Whether you want a full rainbow unicorn birthday party setup or just a few whimsical finishing touches, everything in the collection mixes and matches beautifully — so you can create a unicorn party your birthday girl will talk about long after the candles are blown out. All made in the USA and shipped fast!

Love magical and whimsical party themes? Also check out our mermaid party supplies for another enchanting option. Or browse all of our kids birthday party supplies for every age and theme.

What occasions work best with the Rainbow Unicorn party collection?

Our Rainbow Unicorn collection is perfect for unicorn birthday parties for girls of all ages — especially popular for toddler birthdays, preschool celebrations, and first birthdays where the birthday girl loves all things magical and colorful. The pastel rainbow palette also works beautifully for unicorn themed baby showers, rainbow baby celebrations, and any party that calls for a little extra whimsy and magic.

What makes rainbow unicorn parties so popular right now?

The rainbow unicorn aesthetic has become one of the most beloved kids party themes because it combines two things little girls absolutely love — the magical world of unicorns and the cheerful joy of rainbow colors. The pastel palette photographs beautifully, the whimsical details feel special without being overwhelming, and the personalization options — like custom face tattoos and personalized banners — make every guest feel like part of the magic. It's a theme that works for toddlers through tweens and always creates those shareable party moments parents love.