Measurements are by size not age.
For a better fit, please place order based on weight of the baby girl. Choose the next size up if the baby girl's weight falls between bounds of two sizes.
If you don't know weight of the baby girl, you can reference the "suggested age" we recommended, based on feedback from our previous customers.

S: 5 - 14 pounds (newborn up to 4 Months)
M: 13 - 18 pounds (3 Months up to 10 Months)
L: 16 - 26 pounds (9 Months up to 22 Months)
XL: 24 - 47 pounds (20 Month up to 5 years old)
XXL: 47 pound up to 72 pounds (5-8 years old)
Search the same product title in Baby Girl Clothing Department or Click Rosy Kids under the product title for baby girl sizes.

• Ultra soft and stretchy baby girl petti lace romper. Made of tiered lace in premium quality, fully lined using polyester lining fabric. Vintage chic girl lace romper, western country couture style petti romper, posh baby lace petti romper.
• Comes with matching headband with rustic flowers, and bow made by satin ribbon.
• For proper fitting, please choose size based on weight of the baby girl.
• Perfect baby shower gift. Wonderful outfit for baby photograph, 1st birthday photo, party or wedding, flower girls or daily wear.
• Available in baby girl and toddler girl sizes and in petti ruffle lace dress style.

Ultra soft and stretchy baby girl petti lace romper. Made of tiered lace in premium quality, fully lined using polyester lining fabric. Vintage chic girl lace romper, western country couture style petti romper, posh baby lace petti romper.