Vintage 50s 60s Nannette Dress Blue White - NO SIZE TAG - 18 or 24 mos? - READ

Vintage 1950s-60s Nannette dress, NO SIZE TAG. Seems closest to a modern 12-18 or 18-24 months in size, compared to our other clothes. PLEASE CHECK MEASUREMENTS, and if you have any questions, don’t hesitate to ask. Royal blue with white details. Pintucks on chest. Buttons and ties in back. Feels like cotton or a cotton blend. NOTE: There is what looks like the tiny start of a hole on the chest, I think it’s a single broken thread (see last two pics). I can see a little dark color fade on the blue, mainly visible on folds. Inside tag looks like it has some stitches missing at top where it attaches, but it is still held in. No other issues that I see. For best fit I recommend taking measurements of a garment that fits and compare to the measurements below. MEASUREMENTS LAYING FLAT: Highest point on shoulder to hem: 16.25” Pit-to-pit: 11.5” Shoulder width (seam to seam): 9” Length of skirt portion: 9” Relevant tags: structured classic mod cotton 50s 1960s mcm mid century