About Us

Founded in Placentia, CA, CosKidz.com is a trusted online store of kids costumes, Halloween costumes for boys and girls. With our weekly updated selection of colorful kids costumes, you'll never run out of ideas for your children's Halloween costume. Bring surprise to your kid now!

Best Fit It

As promised, we measure every costume in our warehouse to ensure that the correct sizing information, so it will save your time.

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It ensures that you are the first to know about deals, events, and the latest information about your order status. Subscribe today!

Crazy Deals

We offer many crazy deals! Come back often, you would never know what kind of sales you'll find!

Get Intimate with Us

We love to share life about children, kids costume ideas, and also publish our deals, hold events. Come and find us on Facebook.