I'm really not sure how accurate these charts are but the two i have used say that my Pixie wont be over 2.5 lbs as an adult, I really hope this is not true and she makes it to 3 or over as her size does make me very worried.
I havent had her weighed in a few weeks so will take her to my vet this week to find out what she is now as i'm not sure how accurate my kitchen scales are! I think she is around 2lbs (i hope!) and she will be 6 months old 4th december.
Just to add, I think her mother was around 3.5lbs so maybe she has a good chance of reaching that.