Milf groups of mature women are known as Euro Milf or European Milf. You can look at it as a new trend, but is it really new? The answer to this question depends on how you define "new". For step daughter/step mother/step-father it might be a whole new ball game...but for those who know the milf hierarchy (i.e. step mom/step dad), it's more like a new way to play it!.