Catherine Zeta-Jones holds onto her hat - but loses her darling curves

She was once famed throughout the valleys for her darling curves.

But now it seems that actress Catherine Zeta-Jones is firmly part of the Hollywood set, as signalled by her ever-decreasing figure.

The Welsh born beauty stepped out in a kaftan cover-up, with a revealing split, as she and actor husband Michael Douglas, 63, arrived in St. Tropez for a summer break .

Hats away: Michael Douglas helps wife Catherine Zeta-Jones stay upright on the gang plank - as she gamely tries to hold onto her hat in St Tropez

And it seemed that the huge black sun hat she wore wasn't the only thing she was struggling to hold on to.

Once famed in television show The Darling Buds of May for her natural, healthy look, now Catherine looks a shadow of her former curvaceous self.

The black mini gold sequinned kaftan exposed her thin legs, and the disappearance of her once volutuptuous shape.

Slim pins: Catherine Zeta-Jones reveals her very thin legs as she holidayed with husband Michael Douglas in St Tropez

The actress' weight is known to have has fluctuated over the years.

Catherine, who is married to Michael Douglas, has told how she 'ate for Wales' when pregnant with her first child, Dylan, now seven.

At her heaviest she weighed 13 stone.

After the birth of her daughter Carys five years ago, she used a tough dance-based routine from her movie Chicago to whittle herself into shape.

Husband Michael looked somewhat more rounded as they arrived at swanky Club 55 in the millionaire's playground.

Hollywood wife: Catherine's weight seems to have gone the way of most Hollywood actresses - all the way down

But Catherine's weight loss is all the more surprisingly as the 38-year-old has often hit out at Hollywood's obsession with "super skinny women".

Talking about the Hollywood obsession with weight, the former West End dancer has said: 'My muscles have memory from the time I danced, and it's quick for me to get back in shape, but I'm not fanatical.'

Following The Rebound, Catherine has three more new roles lined up, starring in Law Abiding Citizen, Racing the Monsoon and Stompanato.