Actually you’ve enlivened my party in that I’m quite happy that I’ve never been a first semester art student. So I can see the similarity between most of these pretty women and most pretty men too. I can also see the dissimilarity between these pretties and the not-so-pretties, male and female.
I’d venture that Mona Lisa and Eleanor Roosevelt look quite different. As do Mel Gibson and Ugly Betty.
Similar might be, I don’t know, Rock Hudson and Liz Taylor?
Paintings lie. Similarity is, at least until recently, more obvious in photographs.