Is it just us or does Elle Macpherson look as youthful today as she did 20 years ago? With her knockout body, long, flowing locks and glow of a schoolgirl, it's hard to believe she is days away from turning 47.

And it's not just the supermodel that looks super young. Several celebrities over 45 look equally as sprightly -- Demi, Sharon and Iman to name a few. Sure, they have makeup artists and hairstylists at their beck and call, and enough money to plump, pull and tighten. But whatever they do (be it age naturally or with some assistance), there's no denying they look pretty darn good.

We asked the experts to weigh in on how these leading ladies stay so youthful -- needles or not. Read on for tips on how to look forever young.

Speaking of younger looking skin, check out these new beauty gadgets that deliver spa results, at home.