A U.K. teacher is facing disciplinary action after outraged parents spotted photographs of her posing in her underwear on the internet, reports the Daily Mail. Aspiring model Natasha Gray, 30, was reprimanded after a stunned parent wrote an anonymous letter complaining about the "provocative pictures." Gray, who is the head of PE and Dance at a school in Cambridge, is pictured wearing pink lingerie and stilettos on the web site iModel.com. In 2002, Gray was named Britain’s sexiest teacher after winning a phone-in competition, just two weeks before she started her current job. The angry letter from an unnamed parent said the "inappropriate" pictures were "common knowledge" among students as young as 11 at the school. Head teacher Ben Slade insisted the photos had nothing to do with the school but said Gray would be severely reprimanded and the photos removed…