The primary theoretical framework for the study of human physical attraction is currently Darwinian sexual selection. Not only has this perspective enabled the discovery of what appear to be strong universals in human mate choice but it has also facilitated our understanding of systematic variation in preferences both between and within individuals. Here we briefly summarise the background to the area and then discuss two key examples of where an evolutionary and comparative approach to understanding our behaviour has been particularly useful. Classroom activity suggestions and links to key stage 4 (age 14-16 years) teaching requirements are also explored. (Contains 3 figures, 1 table, and 3 boxes.)