Wonder Girl Big Girls' Holiday Peplum Sweater Pants and Necklace Set Made in USA. Wonder Girl dresses are sewn in Los Angeles, California. All photos copyrighted by Wonder Girl 2014. Girls Ages 6 to 14. 100% Polyester. Gentle Cycle Wash and Hang Dry Recommended. Dry Clean is also an option, and will lengthen the use of your Wonder Girl dress. * A Size 6 is for the Average 5 to 6 year old girl. A Size 8 is for the average 7 to 8 year old, etc. Using the Size Chart as a reference, a size up or down from there (if necessary) will get you to the right fit! To ensure you will receive an authentic Wonder Girl product, please make sure the seller you are purchasing from is "Wonder Girl". After selecting the size and color, there will be a caption below that will read "Sold by Wonder Girl and Fulfilled by Amazon. Gift-wrap available."