Maybe baby jumpsuit

 Leg Belt Cami Strap Jumpsuit
Style: Fashion
Length:  Long
Fit Type:  Regular Fit
Neckline:  V-neck
Sleeve Length: Sleeveless
Waist Line: High Waist
Season:  Summer
Material:    Polyester

Size Chart
S Chest 84cm Waist 64cm  Length 135cm
M Chest 88cm Waist 68cm Length 136cm
L Chest 92cm Waist 72cm Length 137cm
XL Chest 96cm Waist 76cm Length 138cm
XXL Chest 100cm Waist 80cm  Length 139cm