According to the author:

This is the second of three images on attractiveness. The Hot or Not web site gives people the option of rating women of all ages or of seeing only a specific age group. I collected photos of women who scored at least a 9.5 average and created multi-morph composites (see some details how here).

The only thing I noticed was that the attractiveness standard people use is more lenient the older the subject. Good for me! I have a chance to appear less ugly as I age ;-).