Am in my early-mid twenties as well and jealous that you can afford clothes as nice as what you are wearing while I am only able to admire items as nice as that for a few more years till I am out of university.
Great thing though to have other people my age on SF, people around myself prefer to dress in jeans and functional clothing which is a pain to look at.
From your previous pics and your overall style, which is similiar to NOBD and IST, I would have guessed you were in your thirties like I expect(ed) them to be.
But just a few weeks back I got to know Igor is mid-fourties and I still don't know how old NOBD is, so maybe I am just bad at judging dress/people.