I know it sounds like a silly question, but we do often receive questions about infant clothes and juniors clothes sizing. Why? because different brands use different tags which can be misleading or confusing.
In our system, we have 5 options for infants clothing (6 if you count premie): 0-3m, 3-6m, 6-12m, 12-18m and 18-24m. Most major brands fall within those established sizes. Every once in a while you do get an oddball 0-6m or OS (one size) item which would require your best guesstimate as far as the size category goes. The retail brand Carter's is the brand that confuses people most frequently because they use only one number for their sizing. A bodysuit by Carter's will say 3m on the tag rather than 0-3m, but does correspond to 0-3m sizing. The same holds true for the 'bargain' brand just one you by Carter's. Newborn sizes are also included in the 0-3m category for our sale. When entering those items in to the inventory program, I personally note the size after the brand description, i.e. 'JOY NB Yellow 2pc set'.
The baby sizes, which are denoted in bold in the chart above, are subject to a hanger limit for all regular consignors. This means that a regular consignor is limited to 30 pieces (or hangers) per gender per size. Anything over that limit will be sent home with you at check-in.
At the other end of the spectrum, we have tween and junior sizing. Tween sizes are generally anything over a kids size 12. Once you get out of the toddler sizes, you tend to see more of the 4-6, 8-10, sm, med type of sizing. Depending on the brand and fit, our recommendations would vary. Some size 4-6 definitely fit like a 4, others definitely run like a 6. When in doubt, split the difference.
Juniors sizes are the odd number sizing (1, 3, 5, etc.) on bottoms and xxs, xs, etc. on tops. These pieces are merchandised with women's clothing. Bottoms are pretty self explanatory, but for tops, you can note on the tag that it is a jr's fit. Those of us with tween daughters generally check both girls and women's smaller sizes when we shop. Juniors clothing must be 'mall brand' or better and new within 3 years.