September 16, 2008
The last time the pair were on stage Trinny Woodall flashed her underwear at the audience.
But this time her co-host Susannah Constantine went a step further and showed off her bottom.
The self-proclaimed style gurus performed the revealing demonstration while promoting their magic knickers in Dublin.
Trinny grabbed at her pal's bulging stomach before Susannah whipped off her tights and pulled on the slimming underwear on the final day of the Undress The Nation tour.
Last week the uninhibited television presenters both flashed their underwear during a guest appearance.
They then turned their attention to crowd, assessing the effectiveness of audience member's underwear with their usual trademark frankness.
The pair were taking part in a four-day fashion and beauty festival called Style In The City