Once the sole preserve of wealthy celebrities, cosmetic surgery is now everywhere. It's tempting to think that it's a simple way to turn back the years, provided you have the cash to splash.

But cosmetic surgeons to the stars, 47-year-old twin brothers Dr Roberto and Dr Maurizio Viel, passionately believe you can reverse the ageing process without going under the knife.

"Many people think the only way they will get the face and body they want is via a slew of invasive procedures. But you should follow other steps first such as changing your bad habits," says Roberto, co-author of The Viels' Beauty Bible.

"People can often forget about the most obvious and the simple anti-ageing tips. I haven't had any cosmetic surgery as I try to lead a healthy lifestyle - I get proper sleep, take supplements, meditate and try not to get stressed. But I wouldn't rule it out later on."

- Read the Viels' six-step rejuvenation plan
- Buy 'The Viels' Beauty Bible' by Roberto and Maurizio Viel