Next door to the Xuanhua Bridge, there is a clothing maker who can make any Tang suit, cheongsam, professional clothes and bedding. The name is "Hong Zhong Clothing". Master's work is ok, and business is good? My mother often goes there to do it. It doesn't matter. Did you go to see it? The price is also very affordable and reasonable.
If not, there are several clothes makers in Xiwai Old Street. It is said that they can make suits. There is also a suit maker next to Daming Huang Hao. It seems that they have seen it before, or there are only a few customized clothes there. There seems to be a suit maker. Let's go and have a look.
If in doubt, please ask.