On a more positive note (depends how you look at it), the majority of the girls I graduated with (I am 23) are now on the slippery slope to never losing the weight they gained at uni, and also the drinking lifestyle has caught up with them big time. Mind you, they were already overweight when I was at uni so you know...
Keep in mind that I was a year older than my cohort because of my gap year. Depressing in the sense that you wish they were nice to look at still, but interesting to see how they react in the coming years. Their lifestyle choices are really self-destructive really in the aesthetic sense, for many it's late 20's and past it already. You see the women in their late 30's and 40's and you can definitely tell which were the ones that had a lot of pride back in their day.
Prefer a more traditional Mediterranean lifestyle myself. I am way too vain to live in excess. As a man, imo, I think it is easier to keep looking good (and in many cases even better) as we get older. I love the style choices of men's clothing from 30+ , it is just a lot more sexy than the female counterparts of the same age.