Lingerie Teddy One Piece Blue Satin Sleepwear by Ms. Leslee  pleated blouse this is definitely a Large

this is definitely a Large or an XL (depending on how oversized you want it to be)

20” across chest

Woven scalloped edges

MEASUREMENTS - (DRESS):

A covered metal zipper goes up the back with a fabric-covered button to bustle up the train

Lingerie Teddy One Piece Blue Satin Sleepwear by Ms. Leslee  pleated blouse this is definitely a LargeWomen's Vintage Lingerie Teddy One Piece Blue Satin Sleepwear USA New Old Stock Brand: Ms. Leslee Made in USA Tag Size: Large = Small Medium 100% Woven Poly Satin Teddy Has 3 Snap Crouch Blue with Wide All Around Lace Trim Non Adjustable Straps Measures Approx.: 16" Chest underarms laying flat 32" Total Length No defects noted, New Old Stock item#000 062321