I don't think that the federal government does small business grants, although there are small business loans, lines of credit, etc (through the Small Business Administration). Here is a link to information about the SBA:
Small Business Administration
If you go to your bank to apply for a small business loan or line of credit, it will likely be "guaranteed" by the SBA while it is underwritten by your bank. This makes it easier for the bank to lend to small businesses (well, they feel better about it anyway) because they aren't guaranteeing the entire loan or line.
If you are looking for grants, they seem to be few and far between-- although I haven't done that much research into it. Here is a link to a site that tells you to look to state government for grants and other small business financial incentives and services:
For Small Business Grants Look to the States
I see that you are from AZ-- I am too-- and it seems like AZ doesn't have many (or any?) good programs for apparel companies. But, check it out for yourself and maybe you will see something I didn't.