Cher spends $2,500-a-week on a "wellness
crew".

The 63-year-old star is spending the huge amount on facials and specialist treatments including LED light therapy and oxygen infusion techniques, to maintain her youthful appearance on the set of her new movie 'Burlesque'.

A source told the National Enquirer magazine: "Cher also has a spiritual adviser, homeopath and naturopath on standby to keep her mentally and physically centred.

"She calls them her 'wellness crew' - and they set her back another $20,000 over the course of a movie shoot."

Explaining some of the treatments, Marilyn Martinis, a clinical aesthetician at the Beverly Hills Institute of Aesthetic and Reconstructive Surgery, said the LED light therapy would give the star's skin a more youthful, tones look.

She said: "The LED treatments use a pulse light to treat dark pigmentation and improve the appearance of small blood vessels in the skin.

"The micro-current treatments stimulate facial muscles and temporarily tighten the face by using a galvanizing current."

Cher has previously described herself as the "poster girl" of cosmetic surgery
.