Yes I had a jacket that i bought for farm work when i was a XXL the jacket was an XL so i took it to a tailor and for 30$ they added on a bunch of denim under the arm pits as well as some really nice sweat wicking fabric on the inside. I would recommend it. Reminds me i gotta go to the tailor again
Yes. I actually get mostly tailored or bespoke clothing. You WILL look better, period.
The question is, how much of your wardrobe does it actually make a difference for? If I'm only wearing a certain thing of clothes at home, tailoring is hardly worth it. But for work/dating? Tailoring is a great idea.