We've all heard of the mythical creature the supportive strapless bra.
Since my recent conversion to Lane Bryant's line of undergarments, I've been amazed to find out that my DD cups can be made to defy gravity (and actually create cleavage) with the aid of the seamless 6-way convertible bra by Cacique. I can report with relief that it is not a long-line bra, but it is still a challenge to get the thing on.
Now I finally get why I see so many plus-sized tube tops for sale.
I'd link, but I can't find one. I'd suggest a trip to a mall to see this modern miracle work.