Opal pressure pool

Is duct tape ok to be used for big breasts? - materials the big green egg table

All My Best Friends Wedding this weekend and am having trouble finding adequate support, I have very big breasts and the dress is low in the back, the arms are displayed normally. I believe that a tape for my breasts, but I want to know if this will work. Anyone who has tried before, and what is your opinion advising and / or?

PS the dress is woven satin dark green and not too tight.

Thank you in advance.