Anyone know where you can find nickel free bras?

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I have a terrible nickle allergy and the components in many bras contain nickel, meaning I get to experience regular rashes on my sholders and back. Does anyone know of a retailer online or offline who makes allergy safe clothing? I also wonder about rubber used in undergarments. I'm allergic to that too. It's in some forms of elastic and I think even spandex types of materials, but not absolutely certain about that. I know some of the clothing I have, mainly undergarments with any sort of scretch feature tend to break me out as well. TIA