In the first episode, which was shown on Wednesday evening on ITV, the famous two-some joined forces with a band of professional bra fitters, including Jill Baker, from Dymock, for a measuring and fitting marathon involving 1,000 women.

Jill, who has been in the lingerie business for more than 30 years, shares Trinny and Susannah's obsession with boobs and bras and having spent her career fitting underwear and training others to fit it she knows what she is talking about.

"I can spot an ill-fitting bra at 50 yards," said Jill, who said filming the television programme had been great fun.

Like its stars, the straight-talking Trinny Woodall and Susannah Constantine, Jill believes a correctly fitted bra can make all the difference, whatever a woman's shape and size.

"I can honestly say that many women can drop a dress size if they wear the right bra.

"I can make them look and feel 5lbs lighter," said Jill, who began her career in underwear as a Saturday girl when she was just 13-years-old.

As well as helping on the Trinny and Susannah programme Jill was recently involved with the ITV music show Saturday Night Divas and confessed that she knew the presenter Myleene Klass was wearing the wrong sized bra.

"I ended up measuring her in the ladies loos. It isn't just ordinary women who don't know what size they are," said Jill.

Jill's professional expertise is available to anyone. She has set up a lingerie business covering the three counties area that offers women the chance to get together with friends, sisters or workmates for a professional bra fitting session in their own homes.

She brings her extensive stock of bras along with mirrors, changing screens and fitting and measuring DVDs and says she can find a bra to fit and flatter anyone, whatever their shape or size.

"I've got every size right up to a double J," said Jill.

To find out more about Jill's business visit www.jillyslingerie.com.