Rachel Johnson stripped off on Sky News Friday evening in a bid to 'get noticed', she told the audience and a stunned panel of co-presenters, British media report.
Johnson, journalist and sister of Brexiteer Boris Johnson, took inspiration from Dr Victoria Bateman's naked appearance on BBC Radio 4 and GMB.
She said: 'As I know it can be hard to get your voice heard about Brexit nowadays.
'It feels like we've hit saturation point. Enter pro-EU campaigner Victoria Bateman who's come up with a striking way this week to get herself noticed.
'Appearing across the media completely starkers to make various points about Brexit – leaving Britain naked.
'So in tribute to Dr Dateman I've decided to follow suit – every time we decide to talk about Brexit just to make sure I get noticed.'
During the unexpected stripping Carole Malone pointed out that co-host Nick Ferrari had gone completely red faced.
However, Ms Johnson tweeted after the show to say she was 'wearing a boob tube' and was not totally naked.