The Childrens Place is a chain stores in US and Canada. They do not have any store in HK. I usually ask my friends/ relatives to buy it for me when they go to US. You may check on their website, www.childrensplace.com. Their clothes are not expensive.
Sometime their clothes can be found in the outlet shops in Stanley Market and TST.
Oh that's too bad! I bought clothings and hats for my son last year while we were in Toronto and thought you found a shop carries this brand here in HK. Thanks anyway.