OK, you are another forum already, so it seems like you are coming here for an honest opinion. I called DH over for some fresh eyes that have not already read your real age, and he estimated your age at 35. BUT, he also thought you dressed in a really cool and unique way, which I wholly agree with.
I think there are a few factors that make you project a more mature vibe:
- classic/retro style: you have a defined style and therefore are not experimenting with super trendy outfits, which is (typically) something people do when younger. Conversely, many who post *online* want to be very trendy because of the peer-pressure/I-want-to-be-the-next-Manrepeller aspect.
- quality & quantity: you seem to have lots of awesome pieces - amazing! Even when younger gals have FAB style - and many do! - many younger people don't have the quality because they don't have the money/patience to thrift/et cetera.
- whimsical vs. sexy: sad to say, but let's face it: lots of women around age 25 are dressing to attract men. That is just the way it is... bodycon dresses, 6-inch heels... you get the idea.
That said, do you look like your own granny?? Heck no! YOU don't look older - no wrinkles or whatever from partying too hard IYKWIM. You just look mature is all. I would personally feel fine with that, but whether you want to dress in a younger way is totally your prerogative. Do whatever makes you happy!