i didn't have to buy clothes for my bub for the first 6 months as my friends and family gifted us with lots of clothes. after 6 months - i went to wing on, h&m, the lanes in central, stanley market, mongkok, jordan, shenzhen and baby shops which i see along the way. they grow too fast so i don't invest in expensive branded clothes.
i don't buy him clothes till he outgrows the ones he has but last month, i spent about $1,000 on tops, jeans, jackets and socks which might fit him for another 3 months or so.