Gwyneth Paltrow has offered an unusual beauty tip to her daughter - prenatal vitamins. The star swears the supplements are the secret to her enviable lush locks and insists everyone should take them - whether they are pregnant or not. Paltrow revealed her tip to US Harper's Bazaar magazine when quizzed about the beauty advice she'll pass down to daughter Apple, two. She says, "Drink tons of water and wear sunscreen. And I really do think if you eat fresh, organic, good food, you look like it." When it comes to the secret to great hair she says adamantly, "It's vitamins. Take New Chapter Organics' Perfect Prenatal. "It doesn't matter if you are pregnant, I swear to God. I have double-processed blond hair, and it's so long and not damaged. Those vitamins, they are the trick!"