Just when you thought you'd heard every bizarre beauty secret of the stars! Some celebs swear by sheep placenta, bird poop and Preparation H! But check this out! Scarlett Johansson washes her face with apple cider vinegar! Catherine Zeta-Jones rubs strawberries on her teeth! Nicole Kidman pours a glass of cranberry juice over her hair after washing it. Halle Berry adds coffee grinds to her body wash to beat cellulite. And Lady Gaga takes off her make up with sellotape!