You wear it well

Popular recording artiste Rod Stewart shows he's got soul, as reported in American Songwriter (even if the puncutation is a little odd):
“When I was a skinny, cocky, all-mouth and trousers teenager living in North London without two pennies to rub together, I discovered the artistry of Otis Redding, Sam Cooke, Jackie Wilson, James Brown, The Temptations, The Four Tops and so many more."

Taipei personality

Pleasing if odd use of the phrase in a headline over a book review in the Taipei Times:
Nick Cave’s ‘Bunny Munro’: all mouth and trousers

It's slightly odd in that the phrase doesn't appear in the copy, which is recycled from the UK Observer (where it didn't have this headline), so was presumably added by a Taiwanese sub.

Warm trousers

The Guardian rather undercuts its worthy new 10:10 carbon-cutting campaign with meaningless bastardised vergiage, as Ian Katz writes in his introduction:
With the exception of a small, saintly portion of the population, our response to global warming is a classic case of all mouth and no trousers.

See the paper's own delightfully illustrated style guide:
all mouth and trousers
not "all mouth and no trousers"