Trinny Woodall has traded in her 32A breasts for a 32D to match best friend and partner in solving style crime Susannah Constantine.

The usually happily flat-chested Trinny tried new boobs for size for their new TV series Trinny and Susannah Undress the Nation at 8pm on ITV1 tomorrow night, when they wage war on British women’s badly dressed breasts.

But rather than go under the knife she had them specially moulded from silicon and fitted by prosthetics experts as part of an experiment to see what it would be like to have bigger bosoms.

“I had them fitted so I know what it feels like to be Susannah,” said Trinny who’s first thoughts turned to what she could wear, “but I’ve got nothing for deep cleavage!

“I need to know what it’s like to have really bigger breasts. I think it’s important for me to try big breasts to really get in the headspace of somebody who has boobs. I want to see how it changes me, physically, how it changes me with other people and how it changes other people’s reaction to me.”

And the first reaction comes from Husband Jonny Elichaoff, who was horrified by her new full breasts and could barely touch them.

“Urgh that’s sick!” he said. “That is so f***ing weird. That has just done my head in completely.”

Unaccustomed to such a page three-esque chest, Jonny remarked that he thought they were ‘too droopy’ in the middle.

“That’s what women’s real breasts are like Jonny, you sag!”

Susannah was also taken aback by Trinny’s buxom bust.

“I can’t believe how real they look!”

Trinny wore her new boobs for a day, learning how to adapt to exercising with them with her personal trainer, and attending a red carpet event so test out her fantastic cleavage with the paparazzi.

“Throughout the day I really felt like a different women. It’s very exciting to feel like a different women with a new identity.

“I did feel I could flirt more, but also equally that was coupled with relief when they came off.

“I’ve got my old friends back they’ve lasted me well, they won’t droop and sag because there’s nothing to droop and sag. And they’ll see me through to old age.”

Susannah said: “I didn’t like seeing Trinny with big boobs, I felt very uncomfortable about it and that brings home to me the fact that woman ought to celebrate the way they are. We want women to get their boobs in the right bra and feel fantastic about them.”

Trinny and Susannah Undress the Nation tackles some of the country’s major dress issues, and in the first programme the straight talking style experts take on the sensitive issue of the nation’s breasts in an attempt to discover why so many British women wear the wrong sized bras and neglect their breast assets.

Trinny and Susannah Undress the Nation, Wednesday night at 8pm on ITV1.