That only works for people for whom the largest size option is too big in every dimension. For me, XXL clothing is rare, AND 75% of the time, XXL clothing is made for a person 11" shorter than me who weighs 3x more than me. Which a tailor can reduce the width, but a tailor can’t make the clothes taller.
If you’ve got any local tailors, you can always buy slightly larger and then bring the clothes to them for adjustments
That only works for people for whom the largest size option is too big in every dimension. For me, XXL clothing is rare, AND 75% of the time, XXL clothing is made for a person 11" shorter than me who weighs 3x more than me. Which a tailor can reduce the width, but a tailor can’t make the clothes taller.