I am in a wedding and the bridesmaid dress is from Banana Republic.

Gap.com and oldnavy.com are SR merchants, but BananaRepublic.com is not even though it is part of the Gap family.

You can now shop at all five sites on one shopping order (including piperlime and althleta) so I'm wondering if I can enter Gap.com through SR and get what I need from Banana Republic and still have it credit? Does that make sense? Would I have to make a small purchase from gap or old navy?

While I appreciate the dress is not a cheesy prom gown I'll never wear again, at $225 , I'm trying to lessen the blow to my pocketbook any way I can...