On the side note, I understand from my mum that Kua is usually wore by the Cantonese.
It's usually 3/4 sleeves cause the Canton Bride would usually be presented with Dragon-Phoenix Bangles during tea ceremony and some gracious relatives would present her with jewellery as well. Hence the 3/4 sleeves cut is to "show off" the gifts that she has received - according to my mum that's the olden days culture.