I tried to buy a convertible bra, but they don't make my size. I don't want to be sexy, but just don't want my straps to show in sleeveless blouses.

I like the ads, but agree that they don't go quite far enough. Maybe the company was testing the waters to see if the public would accept larger than normal models. If this campaign is successful (and it must be if we're talking about it), maybe even more voluptuous models will be used.