That saying probably came about because of the observations I'm about to mention, but after attending a couple of festivals recently I noticed it was happening to quite a great extent. Girls in small groups seem to very often bare a remarkable resemblance to their friends.

It is not particularly surprising that they share similar fashion sense and hair styles and the like, but they also share physical traits.

At Woodford, the Sydney Festival opening night, and just generally on the street and in bars I've noticed quite a lot of girls hanging around together in groups of two or three who are close to the same height and build. Short girls with short girls, tall girls with tall girls, average girls with average girls, fat girls with fat girls.

Why?

Does the same happen with guys?