Shrinking Myleene Klass is losing her famous curves

The new mother cut an incredibly lean figure in a tight black satin gown as she arrived to host the Mayfair Personality of the Year Awards at the Grosvenor House Hotel on Wednesday night.

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The star has previously put her rapid weight loss down to her hectic schedule and the demands of motherhood.

She has said: "I think breast-feeding helped, and running up and down stairs all day."

But her shrinking frame is likely to disappoint admirers - including fiancé Graham 'Gray' Quinn - who have celebrated her shapely physique.

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Myleene has said: "Gray hates it when I get too thin, he calls me Boney M."

The former I'm A Celebrity contestant, who turns 30 in April, has just recently returned from an M&S swimwear shoot in South Africa, but has insisted she would never succumb to the fashion industry's size zero obsession.

She said recently: "Here I am surrounded by these models who are six foot two and they've got perfect bodies, but then I'm thinking, well, my role here is to be me.

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"When M&S signed me up, they knew that I'm only five foot five and a half and not a size zero.

"I'm certainly not a supermodel, like Twiggy or Erin O'Connor."

As well as modelling and motherhood, Myleene's schedule has been as busy as ever.

She has just released a classical compilation Myleene's Music For Mothers as well as a book, My Bump and Me, about her experience with pregnancy.