Beauty in the academic labour market

The labour market returns to "beauty" have been studied by various authors. However it is not something that you might expect to be a feature of academia. But Hot or Not: How appearance affects earnings and productivity in academia by Sen, Voia & Woolley demonstrates a surprisingly large wage premium to academics judged "hot" by students in the well known ratemyprofessors.com site. Why? Because they're worth it, I suppose. No sniggering at the back, please.