Demi Moore! thinking back to the brat pack days.
Nicola Roberts form Girls Aloud. Agree with Mel C and Jennifer Anniston.
IMHO, anyone who has completely changed their appearance through extensive surgery - like Demi - doesn't really count. She did indeed used to be a chubby, big nosed, big chinned plain woman and then $500k later, transformed. To me, that's not ageing properly - it's cheating.
I saw Cheri Lunghi on Daybreak the other day. She's 60 and has wrinkles - but looks fab - and not plastic like so many of her compatriots.