It's pity, there is no choice number 3.......or is their ?
I think it can be achieved.
Choosing clothes that are slightly a tad bigger.
If you have to wear a suit at work due to the dress code, have one made (if possible) that looks a million, but has been 'tweaked', so that when you sit it is comfortable.
For the ladies the same can be achieved.......I know I have a wonderful tailor, and they are not expensive....as you would think.
Off the rack clothes can be difficult,I have even bought one size bigger, and had it altered to give me a great look...with more space to breath.
No one knows, only me.
Your size makes no difference, sometimes it can be sleeve length, collar size, waist size...etc etc.
It just a matter of doing your home work, and finding someone who can make the changes.
I did ages ago , after having to sit at my desk sometimes 12 hrs a day.
Have never looked back, believe me.