GAP

GAPの服は細身で袖が長い。6〜12ヶ月表記もアバウトだけど、アメリカのおデブ赤ちゃんはすぐオーバーすると思う。

GAP clothes are slender and have long sleeves. The 6-12 month notation is also about, but I think American fat babies will soon be over.

彼女も袖を捲って着なくて済む頃にはお腹の部分がきつくになりそう。By the time she doesn't have to roll up her sleeves, her stomach will be tight.

もしかしたら彼らはそんな服に合わせて身体が成長してるから細身に育つのかも？？

Maybe they grow up slender because their bodies grow up with such clothes? ??