beautiful event, but she s not spending all of her savings on it. i love this dress. i m going to show my mom the dress. so i m going to get her on the phone and get her down here. reporter: we wanted to find out if women could tell the difference between a bulk store bride and a boutique bride. which do you think is from costco, and which one is from a high-end bridal boutique? this one. reporter: where? this one from a bridal boutique. reporter: wrong. it s a costco dress. this is costco. reporter: you re right. but you think it looks high end, right? costco high end? that s right. not my taste. reporter: still, when their big day comes, some women will be wearing something borrowed, something blue, and something from their favorite big box store. pretty cool. they re calling it costcouture. very cool name. the bridal industry, $74 billion industry. very expensive. but a lot of people say, there s