Vintage Newborn Hospital Outfit Shirt Pant Bonnet Stork Unisex 0-13lbs

There is a faint yellow line across the pants (see 2nd picture), Im wondering if it's residue from the edging design while stored. Very Faint. It is labeled 0-13lbs as the size. Measurements (laid flat): Chest: 9in Length: 9in Please see my other baby items, I am listing an entire estate collection of vintage baby/doll clothes!