(click images, via)
Of course this would happen in the UK, where they are—even more than Americans, I believe—obsessed with enormous knockers. This 30 meter over the shoulder boulder holder was hung on the ITV tower in London on behalf of Vanish detergent, an official partner of "Wear It Pink Day" (which was Friday). I'm wondering about the lewd chitchat that went down in those offices.
Ad agency: Chillisauce.
Previously in: ambient breast cancer bra ads.
And here's my breast cancer ad archive (some nsfw).