I used Made by Rae's Big Butt Baby Pants pattern and it worked perfectly for this wonderfully chubby, cloth-diapered baby. Since she's so big, I made the pants 12-18 mo size. I thought I was making shorts since I shortened the inseam by half, but it turns out they're pants on her, who knew!
The pattern was great and easy to follow and I think they're super cute!
Happy half birthday! You and your parents are doing great!!