New with tags. Tagged size 5 on hang tags and top label. Tagged size 0 (XS) on bottom tags. Based on measurements, this is a size 0 (XS).

Brand: Good American
Color: Black
Size: 0 (equivalent to XS)

Measurements are approximately:
Pit to pit: 14.5"
Waist: 26"
Shoulder to hem: 49" (adjustable straps)