Well for a few reasons. One I live in Boston right now and all the internships were in NYC. Other than that I don't know, just never really what I wanted. On top of that they're unpaid, I need to live
Fashion work is the pinnacle of photography, and getting into it isn't easy and certainly not for the meek. If that is the direction you want to take, then you go to NY, Paris, Milano, Tokyo, or L.A., or 2nd tiered cities like SF, Hong Kong, Barcelona, or Singapore.
I know it ain't easy, if it were, everyone would be doing it.
Thousands of want to be photographers jump off a bus from nowhereville to have a slight chance at this world, and they would sleep on the street or in a cardboard box on just the hope of getting an appointment with someone who can get them in, on top of other things that they are willing to do.....
Whatever you are not willing to do, a thousand others are willing to do it, never forget that in this world.
Now, if you're working with agencies now, you've done the first step. Now you need to move onto larger agencies that actually work in real fashion.
1. Find how they like photos submitted. Follow those instructions like your life depends on it.
2. Make sure your images measure up to their standards, this includes using the correct type of models.
3. When submitting, make sure you provide only the info that they are looking for... Don't ramble on about how serious you are or how good you think you are, or anything else.
4. Build a great team. This means mua, hair stylist, clothing stylist, etc... Who you work with is just as important as your photography.
I would highly suggest that you watch a documentary like "picture me" on the fashion world before you dive into it. There are reasons why this industry has a decent suicide rate and that isn't limited to just the want to be models.
There are loads of 2nd and 3rd tier fashion magazines out there that also accept submissions.. If your work can stand out, you can get that break, but be prepared, because business doesn't wait for you. Opportunity is fleeting and it only takes a second to miss it.