I ordered a precious
x-small camo harness for Gus from Barkatme on ebay....unfortunately, it is still a little too big and not quite snug enough for me to feel comfortable taking him out in it-and he is now 4 1/2 months old and a little over 3 lbs or so. I have a pretty small soft adjustable harness that I bought at either Petsmart or Petco and it is by some brand that makes items especially for small dogs (it might be called tiny paws or something like that!). You could try getting one of those, because Gus was able to wear it when I got him at 8 weeks old and he was 2lbs. Hope that helps!