She is a half a year. We have survived as parents of four for six months! She is sitting up, rolling all over and really wants to crawl. We haven't started solids with her yet because she is just not interested. She is babbling. She has regressed in sleeping, but goes right back to sleep after I feed her. She is wearing 6-9 month clothes, size 2 diapers, and weighs 16 pounds.