a boring return

EDIT:
Aghast at my lack of etiquette, my boyfriend has disallowed me from buying this dress! Back to square one.

Friends, is this dress too white to wear to a wedding?

I have spent an embarrassing amount of time searching for dresses but just keep returning to this one. Everything else seems either too boring, too casual or too expensive.

Or if you have suggestions for an alternative dress, please, do tell.