Gabby was 8lbs and is still in 0000's at 3 weeks. I think she will be in them for another week at least (possibly even 2). She has a couple of 00000 suits that fit her but I think it's because they are a little bit generous compared to the wondersuits. I don't think she is a terribly long baby either so that's why they fit ok.
I can't wait until she moves to 000! We have so many cooool and cute outfits for her to wear