The British bottom has been forgotten – out of sight, out of mind and, for some, a source of horror.

Trinny and Susannah take a group of ladies who are ‘bottom-phobic’ on a journey to help them learn to love and dress their bums.

To kick start their mission Trinny and Susannah pose nude for a life drawing class, where the features of the paintings are their backsides.

Having dealt with many women’s, and men’s, body issues in previous programmes, the girls know they’re in for a tough task to make women be objective about their bottoms.

Trinny: “People’s perception of their body and the reality is so different. Whenever we deal with women and we’re looking at their body and we ask them what they dislike of their body, they distort times half again the size of the area they don’t like the most.”

So they take their pink pod back on the road and invite women to share their bottom woes with them. ‘Saggy’, ‘big and flat’, ‘too wide’ and ‘not what it used to be’ seem to be the most common complaints from ladies who loathe their derrieres.

Trinny and Susannah believe some women have begun to neglect their bums, and in an attempt to cover up something they think is horrible, they’re actually making it worse by dressing badly. To illustrate this point they pluck peachy bottomed Paula from the pink pod and treat her to an instant makeover.

Paula, a 35-year-old mum, feels she has gone from being proud of her bum to covering it up. But the girls think it’s the best bottom they’ve seen so far.

Susannah: “You have a fantastic arse and I think we should show you how to dress it properly as I think it’s a shame for you to feel anything but pride in your bottom.”

Having met many women with genuine fear and loathing for their behinds, Trinny and Susannah invite eight of the most bottom phobic ladies they’ve met to a life sculpture gallery in Brighton. They’re there to have their bottoms cast by award winning sculptor Jamie McCartney to create a perfect duplicate of their derriere.

Trinny explains: “It’s similar to when Susannah and I saw our bottoms in the art class, because if they can see their bottoms objectively I think they would really learn to appreciate them more.”

30-year-old mum of two Sarah de la Porte has a bottom which has made her the butt of all the family jokes.

Sarah says: “My dad always says it’s like two ferrets trying to escape and my other half says he always has the urge to park his bike in it.”

32-year-old Tamara feels she’s inherited her big bum.

She says: “My bum has always been with me it doesn’t matter how big or small I’ve been it’s always been quite large, it runs in the family. I like it when it’s hidden under clothes but when it’s off and it’s naked I hate it.”

And 42-year-old Angela Cook has a classically British problem - a big bum and a tiny waist she finds impossible to dress.

“Most people go shopping because they want to go shopping, it’s fun, it’s exciting, you get new things to wear. Whereas I go shopping and I come home and want to jump off a bridge,” says Angela.

Despite their reservations the ladies join Trinny & Susannah as they disrobe at a gallery in Brighton to begin the process of having their bottoms cast ready to be modelled into bronze-coloured sculptures. Once they’ve all been completed, the girls gather the ladies at a London art gallery where their bottoms are privately displayed for them.

Excitement gives way to disappointment as they get up close and personal with their bottoms and most find that their original fears are worse than they thought, with a few women even reduced to tears. Trinny and Susannah try to persuade them to get through the negatives and find something positive with their beautiful bronze behinds.

Trinny: “Don’t be so British and just look at the negative, I’m sorry. This is something we’re here today to try and get through and really try and appreciate our bottoms.”

Slowly they start to see the positive, and take small steps to beginning to love their behinds.

Next up Susannah takes on self-confessedly big-bummed Sarah and shopaphobic Angela to show them that learning to love your bottom is an easier solution than the hard work it would take to physically change it. She even manages to find Angela the perfect pair of trousers to fit her curvy large bottom and her tiny waist.

Continuing their message that the ‘Trinny and Susannah way’ is the best way, the girls spread their makeover message with a master class in wearing the right type of pants. But first they check out the most criminal of all under garment – the bikini brief knickers.

“This is the VPL maker, the visible panty line creator,” says Susannah. “You see women wearing them everywhere.”

In an attempt to educate ladies about solving bottom problems they gather four ladies with classic bottom shapes, which should never brush with a bikini brief. Dressed in the same unforgiving wrap dress they illustrate the magic of support pants to help flat bottoms, big and round bottoms, saddle bags and the saggy bum.

Trinny takes two of her bottom hating ladies, Tracey and Sarah, to Lancashire University to meet some experts who study the science of body movement and posture. She wants to teach them how to walk to make the most of their bottom.

Trinny says: “I believe the key to a sexy bum is how you move it, and today is about showing how high heels can really help that. They affect your posture, they make you aware of your bum, and with real practice they can give you a great swing.”

After all the ladies are successfully made over, Trinny and Susannah invite female shoppers from London’s Covent Garden to a hotel nearby to witness the transformations of the eight bum hating ladies as they show off their re-vamped figures and show the world that it is possible for everyone to love their bums.

Wednesday, 6 August 2008, 9:00PM - 10:00PM ITV1