Gestational Diabetes Moms

Karla
Looking for some advice. FTM, diagnosed with gestational diabetes and anemia. I am going on 36 weeks and packing hospital bags.
My sister keeps telling me that it's my first baby so she will fit into newborn clothing and will be under 8 lbs. My sister in law is telling me she won't fit into newborn bc of my gestational diabetes she will be like 9-10lbs.
My doctor won't tell me her weight but has told me weekly numbers from my pricking are perfect. 
So my question is to the gestational diabetes moms what was your babies weights? Should I prepare myself for a 10 lb baby?