One suggestion I was offered by Fleet Admiral Gastineau was these folk:

http://www.aradanicostumes.com/customcostumes.php#scificostum1

Hope the information proves useful. I've placed an order with these
folk this week.
Regards,

Captain Todd "Scotsmuppet" Brugmans
Helm/Nav Officer, Battlestar Hades BSR-77
Quartermaster, CDF 7th Fleet
scotsmuppet@...

On Mon, Mar 9, 2009 at 8:03 PM, Donna <tessercat@...> wrote:
> I apologize if this question has been done to death, but where does one get
> layered tanks? I'm Starbuck-sized and would prefer something not too loose.
> Last Starfest, I winged it in a black sports bra, which is lame and chilly.
> If you have some, I would gladly pay you.
>
> Thanks ~ Flipside