Minh Nguyen Tailor
There are amazing tailors all over Southeast Asia, we also found some in Bangkok and Langkawi, but the ones in Vietnam are really next level. While Hoi An is usually the most famous, you can also find many in Ho Chi Minh City. I went there with a very specific design and fabric pattern in mind and ended up going to quite a few tailors before finding one that could make it exactly as I wanted.
They give you fabric samples to choose from, and in my case, they even sent someone to check availability at the fabric market and bring options back a couple minutes later. The advice was great, and everything was done within 24 hours. You do have to go back a couple of times for fittings, but the location is very convenient, with lots of things to see and nice cafés nearby.
Not the cheapest, but definitely worth it for the quality and overall experience.
Location: Ho Chi Minh City, , Vietnam