I don't know if this is outdoor enough to qualify for Billboardom, but I only have a limited number of blogs and it's hard to imagine how this relates to the future of advertising or ads in computer games, so here.
Anyway, "a nude Britney Spears on a bearskin rug while giving birth to her firstborn marks a "first" for Pro-Life. Pop-star Britney Spears is the "ideal" model for Pro-Life and the subject of a dedication at Capla Kesting Fine Art in Brooklyn’s Williamsburg gallery district, in what is proclaimed the first Pro-Life monument to birth, in April. Dedication of the life-sized statue celebrates the recent birth of Spears’ baby boy, Sean, and applauds her decision of placing family before career."
All this comes from this site where you can get many other details.