Hi, sorry for the delay in responding. I was out of town and unable to check messages. The pinkaholic outfit with the letter "A" is made by: ??? PINKAHOLIC NEW YORK ??? . Pinkaholinc 2012 SS . I think it is page 36 of their current catalog. If you click on the link it will take you to their page. Towards the back of the catalog it has all their measurements. It looks like a Small or X-small may work for your little one. The style # on this outfits tag is: NAIA-OP106, Size: S, Color: L. Pink. I don't know what year this particular outfit would have been in their catalogs. I bought this on SM from another seller and it's way too small for Bella (she's 6.5 lbs or so). Please let me know if I can be of further help.