baby doll

1 :  a short dress or pair of pajamas that is loose-fitting and often adorned with lace or ribbon

2 :  a woman's tight-fitting casual shirt that typically has very short sleeves and flares outward slightly at the hips Not every player inspires a 200% increase in female viewership … and a line of fast-selling baby doll T's printed with the words “Mrs. Sizemore” across the bosom. — Allison Glock, ESPN, 31 July 2006