Originally Posted by whodini
I think when I first started out I bought from all over the place not only to find my aesthetic but also to become familiar with brands outside of reading them on the forum or seeing them at a store; it's definitely one thing to judge an article of clothing from a couple of photos and another giving the piece a few wears to give it a chance to grow or leave in the dust. Also, it's nice to find out for yourself why some people hype brands that might otherwise not be a part of your aesthetic.
This and Mini's response sum it up nicely. I'm still a bit wet behind the ears to a lot of brands, because I've only actually seen clothing from a slim number of them. Dabbling with a broader range of brands early on may be costly, but it'll help expand your palette and help you zone in on your preferred aesthetic.
Once you go through that process, I think you're more likely to develop a loyal mentality toward certain brands, not necessarily a collector's mentality.