you're probably pushing people away. not with your clothing style, but the way you interact with them.
it's probably your own fault. not that you should blame yourself for that, think of it as a bug in your system. it's only your fault for not having identified and dealt with it yet. i'd think having noticed that there's something wrong with you rather than everyone else is a step in the right direction. can't fix a problem that you don't know exists... hurts to be honest enough with oneself to admit this, but it's really much easier to change yourself than to change the whole rest of the world. at least there's hope of succeeding.
depression makes it difficult to interact with people in a good way. it makes the negatives darken your surroundings, instead of having the positives brighten the world. i only recently got out of something that i really think was an evil cyclic depression. i've become happy for no reason whatsoever. i just suddenly went from feeling like the whole world was against me (a rather subconscious thing), to not really caring that much about others because i'm ok and that's all that matters.
funny thing is that not caring all that much seems to have made me get along with people more easily. instead of watching what i say in fear of rejection, or purposely avoiding interaction, i can give someone a smile or a compliment simply because i feel like it. other than that, everything is the same as before, really. nothing has changed in the world, in my life, in my current situation. even my mood swings are the same as before. it's just something inside me that got untangled and thus enabled me to relate to the world and other people as if they not only are real, but i want them to be as well.
i think i got a little lost typing here... instead of worrying (it doesn't solve anything, only makes you more likely to make the wrong decisions), try to fix one little thing at a time. together with your therapist, in the way you interact with people, in flawed thinking patterns. it can be a long process, but it's usually worth it. and the answer might just present itself when you least expect it, just like it did to me.
and even if reading this didn't make you happy at all, that's also ok, unless i unintentionally hurt you (that would be bad of me). the best thing is to take everything at one's own pace. and then share your frustrations where people will listen, like here.