Which bra is best, and where can I get it?

tinker belle

My wedding dress has a keyhole opening in the back (2nd photo)
http://s3.amazonaws.com/wedding_prod/photos/demetrios_princess_collection_9692_fshl.jpg
http://s3.amazonaws.com/wedding_prod/photos/demetrios_princess_collection_9692_1_fshl.jpg

My seamstress is suggesting I wear either a convertible bra or a longline low back bra underneath. I've been looking on the web.

Convertible bra (clear straps):
http://site.lindasonline.com/item_gallery.php?var1=le-mystere-dos-nu-convertible-bra-1155-black

Longline bra (strapless):
http://ep.yimg.com/ca/I/queen-lingerie_2080_5453782

Which one is best? I'm worried about it showing in the back, and I'm not sure if the clear straps will work.  And where is the best place to purchase such a contraption?  Thanks in advance.

kate85

I am not sure where you can find these but I think you will be able to see the first one from the back. The second one might be ok.
Can you have cups sewn into the dress or just get the cups that stick on to you where there is no back at all. I think they sell them at Victoria Secret among other places.

nataloo314

I would look at Stacey's Lingerie and Bridal. They have a ton of options and the staff is very helpful.