Females use various behavioural tactics in order to attract the attention of a desirable mate. Wearing high heels enhances female physical attractiveness for the opposite sex, thus their use seems to be a powerful sexual signal. We investigated female preferences for high heels both in everyday life as well as in a hypothetical mating scenario. Slovak females reported a low frequency of wearing high heels (45% once per month, 38% never) in everyday life. Females with a lower body height and high self-perceived attractiveness reported more frequent use of high heels than others. Sociosexuality and involvement in a romantic relationship did not predict the wearing of high heels. When females imagined an interaction with an attractive male, preferences for high heels steeply increased compared with a scenario with an unattractive male. Females with a low body height use high heels in all probability to visually elongate their leg length in order to increase their physical attractiveness. High heels seem to be a form of sexual signalling by females in intersexual interactions.