6 months after I cut out the fabrics.....It's a huge one and I hope it'll last many years!
According to DH's wishes, I used velcro for the side and bottom, and snaps for the shoulders.
update 100521: DH tried it on DD and gave some feedback:
1. armhole too big (ok I can fix that)
2. body too wide (I made it big so DD has freedom move inside but DH doesn't like it)
3. neck whole too small. (what the??)
6 months ago