Ashton Kutcher swots up as Ms Demi Moore looks as young as ever in bikini

If you spent most of your time around Demi Moore, chances are you’d get paranoid about how young you looked too. While his 48-year-old wife appeared to defy the ageing process as she emerged from the sea, Ashton Kutcher was reading a book called The Youth Pill. It should come as little surprise. Miss Moore even managed to look as fresh-faced and slender as her daughter Tallulah Belle, 16, when they attended a fashion show together last month.

Demi Moore was with husband Ashton Kutcher in the Caribbean at the weekend - and looked just as young in Charlie's Angels: Full Throttle in 2003

The pictures of Miss Moore on holiday in the Caribbean this weekend had echoes of a scene from her appearance in Charlie’s Angels: Full Throttle in 2003, aged 41. But it seems even she might not be fully happy with her figure, as she couldn’t resist having a quick flick through 33-year-old Kutcher’s book herself.The Youth Pill, by David Stipp, explores scientists’ search for anti-ageing measures.

Ashton was getting some tips reading The Youth Pill: Scientists at the Brink of an Anti-Aging Revolution on the beach

The book by David Stipp gives tips on how to stay youthful

Miss Moore, of course, is said to have taken advantage of many of these – usually by going down the surgical route. The actress is said to have spent £220,000 improving her body, including liposuction to her hips, thighs and stomach, estimated to have cost £16,000.

She is also reported to have had a £9,500 breast implant operation and £20,000 of work on her face, as well as paying an army of advisers, including a nutritionist, personal trainer and yoga teacher. Miss Moore said recently: ‘I had an extreme obsession with my body.

‘But ultimately it didn’t bring me anything but temporary happiness.’

She was seen looking the spitting image of Tallulah Belle, her daughter by ex-husband Bruce Willis, at the show in Brazil where Kutcher was doing some modelling himself.