I don't have anything against older women, and I'm not far from that age range myself, but I can't recall a young attractive female flight attendant on a US airline in the past 20 or more years.

As far as attractive older flight attendants, the oil co's in AK have a pair of 737's they fly workers to the oil fields with. One of their attendants is a drop dead gorgeous tall blond, and I'm sure she's over 50 as she's been part of the flight crew for the 17 odd years I've been flying up there.