These celebrities look fantastic despite their birthdays, and whether or not they've had "help" of the plastic surgery kind, there's no denying they've all been drinking from that proverbial fountain of youth.

When 57 year-old Christie Brinkley stepped out on the Good Morning America TV programme earlier this week, we couldn't believe our eyes. The iconic model and actress, who famously starred in Billy Joel's Uptown Girl video back in the 80s, easily looks half her age.