Grana is a popular shirt company based out of Hong Kong which my friends told me about. They stock really comfortable and pretty silk shirts which cost around $70SGD and come in a nice variety of coours.
I give their women's silk shirts a thumbs up for quality and a double thumbs up for their men's Peruvian cotton t-shirts which fit my husband really well.
My only comments about Grana is that they don't offer exchanges for a different size so you have to ship it back, wait for the refund before purchasing the right size. In the end, I didn't bother.
Shipping to Singapore is $15SGD which is not bad for 2 items.