A housewife's 'trendy' fashion tastes made her a police target, the High Court heard yesterday. Lau Yin-kum, 30, flew into a rage when an officer approached her in the Mongkok MTR station and demanded her identity card. 'The officer said he thought she was a mainlander because of the 'trendy' clothes she was wearing,' defence barrister Alexander King said. 'They were the kind of clothes popular with young women in China.' Ms Lau ended up in court after she flew into a rage, shouted at the officer and tried to walk off. But yesterday she won her battle against the constable who arrested her and the magistrate who convicted her. An ecstatic Ms Lau kissed Mr King outside the courtroom after Mr Justice Arthur Leong Shiu-chung cleared her name. On November 1 last year, the policeman approached Ms Lau in the Mongkok MTR station. When he asked to see her identification, Ms Lau demanded to see his warrant card. Then she began to walk away. When the officer tried to stop Ms Lau, she shouted at him not to touch her and demanded that a female police officer be brought to the scene. Last December, magistrate Kevin Browne at North Kowloon Court found her guilty of obstructing an officer and fined her $1,000. Mr King told the High Court that Ms Lau had been forced to represent herself for much of the trial after she had sacked her duty lawyer. Ms Lau claimed that the duty lawyer had ignored her instructions. The magistrate refused to allow an adjournment for Ms Lau to secure another lawyer to represent her. Mr King argued that her right to legal representation was violated. Mr King said the magistrate also failed to identify what the housewife had done to qualify as obstruction. Mr Justice Leong agreed and overturned the conviction.