Any guesses what store this morning got be from based on the hanger/red size label? It is Carter's, but I can't find this 4-piece set online at any of the stores I regularly shop at. Even googling the item/style number isn't helping.

DD received this as a gift but I'd love to exchange the size, since she currently wears 0-3 months, meaning it'll likely be cold weather again before this fits....but I can't figure out where it might be from. There is a similar 3-piece set carried all over, but this one is a unicorn. Hoping someone who does more in-person shopping than I do can recognize the sticker/hanger. Thanks!! P