Ever wondered how Margot Robbie keeps her Hollywood smile perfect? <br /><br />Well here’s your answer. She still wears retainers because she is "paranoid" about her teeth.<br /><br />When the actress was 14-years-old a dental practitioner told her she would need to keep the plastic guards in for two years, but she still wears them now at the age of 27. <br /><br />Margot revealed she has two retainers, one for the bottom teeth to stop grinding and one for top teeth so they don't move.<br /><br />The 'Suicide Squad' star revealed she even took extreme measures to try and stop her teeth grinding habit by having Botox injected into her muscles inside her mouth.<br />
