Trinny Woodall Susannah Constantine Trinny Woodall and Susannah Constantine For two ladies who're always carrying on about clothes and what to wear...

This naked snap is a jaw-clanger of note.

But which ladies have decided it's out with threads, and in with their birthday suits?

Why, none other than TV's Trinny Woodall and Susannah Constantine.

And no, the pair weren't parading a new make of "invisible clothing" or the like, their naked adventure is all in the name of work.

They went in the buff to promote their new TV show, The Great British Body, which hits screens in June.

And they weren't alone in their no-clothes moment - they were joined by scores of volunteers who also stripped down in celebration of Blighty's finest feminine forms to make a living sculpture on a hillside near Sussex.

Imagine if some poor unknowing soul headed out for a morning stroll in the countryside and stumbled across this lot.

What a surprise.