Wonderbra Debuts 3D Billboard Safety experts warn it may cause traffic accidents By Evann Gastaldo, Newser Staff Posted Sep 14, 2010 2:00 PM CDT 2 comments Comments A file photo, in the old-fashioned dimension. (Shutterstock) (Newser) – There's probably a joke about 3D vs. DDD somewhere in here: Wonderbra's latest advertising campaign is, yes, a 3D billboard in London. Makes sense, since the company is a "tireless seeker of new ways to make breasts look larger," writes Tim Nudd on Adweek. Of course, you'll need to be wearing 3D glasses to get the full effect—but even viewed without 3D glasses, it's eye-catching enough that road-safety experts are worried it will cause accidents. See the ad here.