keep promoting and give it time, also. i see a lot of ppl who think that they've failed after a paltry four months with few, if any, sales.
as far as your site, i went to the bottom of the men's shirts and saw a spelling error: it's 'confIrmation,' not 'confOrmation.' these things matter.
i also didn't get it. the home page has a lot of white people, one older guy looks like he's talking to his wife after a rousing round of golf, then i go to the gallery and it's a bunch of black dudes standing against a wall. while i'm sure you don't really care who buys the shirt as long as they buy it, there appears to be a conflict of marketing from one page to another. and in the gallery, the second pic in there's a dude's face and you can't even see the shirt he's wearing! imo, you're selling shirts, not putting up pics of yourself or your friends for fun or satisfying your ego/s. in other words, feature your shirt, not you. not a one of them was wearing an accessory, either.
take it for what it's worth, but imo when you're hawking a brand then your pics should reflect the market you're trying to sell to. as it is, it's all over the place. those that i know you took were also pretty generic, a lot of standing against the wall-type of shots. i think i hate these types of photos just because i've seen them time after time after time after time.... i've seen worse quality of pics, but, as you mention on the homepage, you're in desperate need of models. the other pics are obviously templates, but couldn't you find some that were squarely directed towards your market? not only that, but a lot of shirts on those templates aren't even shirts you offer! to me, that's a big no-no. if you don't offer it for sale, don't have a picture of it.
'become apart of a growing clothing line.' should be 'a part.'
i didn't go through the whole site, though i think you should have another set of eyes scrutinize spelling and grammar more.
on FB: The designs are borme from the creative mind of J.D.Huez. (should be 'borne.')
i would probably add a slideshow banner to your landing page, too.
paul makes some good points. have you considered a blog? seo?
the ladies like flashy stuff right now. consider some foil and/or rhinestones. since your design seems to be fairly 'simple' (not suggesting it's bad), perhaps check out what kind of vinyl options might appeal to you, you might be very surprised.
in time, once you've managed people towards your site, there are those issues you're going to have to work on, imo, and they will probably cost you some sales in the long run.
i would make the model search fun if i possibly could. hard to say what kind of promotions to do without knowing how much funds we're dealing with.
i would re-do the 'about us' section. it's, well, rather laughable between all the 'cutting-edge in fashion' and 'brilliant team of designers' and 'highly specialized teams' when the grammar is off and it's clearly an upstart. i know that's a lot of bs, and so does the customer, so why try to bamboozle them into trying to think something they know isn't true? i mean, the way it sounds, this is some kind of black belt team of ninja t-shirt designers and manufacturers working at your beck and call. in other words, imo it's too over the top which comes off as a bit too desperate to impress.
do you have access to video making as inferred by your youtube link? if so, that should be a no-brainer.
have you tried getting your gear into a store?