In an important U.S. Supreme Court case known as Price Waterhouse, the Court ruled that discrimination based on gender stereotyping is illegal sex discrimination under Title VII. In Price Waterhouse, the employer delayed a female employee's promotion, in part based on evaluation comments describing her as “macho” and advising her to "take a course in charm school.” This woman was treated differently because of her gender, and because she seemed too “male.” Therefore, a female employee who is discriminated against because she wears pants or other gender-neutral clothing may be able to argue that she faced discrimination based on gender stereotypes or notions of appropriate dress for women. Many employers have dress codes or otherwise expect their employees to dress according to the customs of the profession. Nothing in the Price Waterhouse case prevents an employer from asking that both male and female employees dress professionally. For example, an employer who requires its male employees to wear neckties at all times and its female employees to wear dresses or skirts would not likely be found to have violated the law, as courts have previously allowed employers to require employees to wear “suitable” business attire, even when the standards for what is considered suitable vary by sex. However, California has passed a specific law making it illegal for employers to prevent an employee from wearing pants because of sex. An employer who requires employees to wear uniforms which are different for males and females is not engaging in discriminatory practices as long as the uniforms for both males and females are “suitable.” For example, women cannot be forced to wear short shirts or sexually revealing uniforms if men are not required to do so.