Hello, you're looking at a vintage baby girl dress made by Michael de Leon from the early 1980s. It has a light green floral print and a white pinafore/apron design with four purple and green butterflies on the front. My godmother brought it back from one of her trips to Europe, and the tag shows the company was based in London and New York.
The pieces are separate, so it can be worn with or without the front pinafore/apron. The front of the dress has three pearlized dome buttons that are decorative, and the back has three flat functional buttons. There is also lace around the top and bottom hems of the white section, and the short sleeves have a ring of elastic around them.
Condition-wise, it is in very good to excellent condition, considering its age. The fabric is in excellent shape, but it is yellowing slightly, and the lace isn't laying down in a few areas.
The clothing tag is also faded, so I'm unsure of the exact sizing. Under the UK measurements, it looks to be a 5/6, and under the US ones, possibly 5/5T. The fabric is a blend of polyester and cotton.
The measurements are:
About 12 inches across from arm to arm
About 8 inches across from shoulder to shoulder
About a 4-inch opening at the neck
About 24 inches across at the bottom hem of the skirt
About 6 inches long from the side arm to the top of the skirt
About 4 inches long from the center of the neckline to the top of the skirt
About 15 inches from the top center to the bottom hem
About 14 inches from the side arm to the bottom hem.