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It wasn't even Throwback Thursday when the "America's Got Talent" judge posted this vintage snapshot of herself in her birthday suit, but nobody seemed to mind. "Photo blast from the past: Splitternackt!" Klum wrote, using the German word meaning "stark naked." Splitternackt indeed! (8/16/2013)

Heidi Klum's Raciest Twitter Photos (So Far)

omg! from Yahoo

For the supermodel, turning 40 has been all about showing her saucy side! The mom of four, who reached the milestone birthday on June 1, has been increasing her Twitter and Instagram followers by showing off her million-dollar body to the masses. Take a look…