She got naked and rolled around in the mud in At Play in the Fields of the Lord, and she's similarly fearless in a scene here where she surprises a hot-tubbing Jack Nicholson by stepping into the Jacuzzi au naturel.
But we adults knew him first as heroin junkie Mark Renton in Danny Boyle's breakthrough feature — in which McGregor showed off his not-so-wee lightsaber after a quickie with an underage vixen Kelly Macdonald.
However, the duo did not last long and soon they were fighting a custody battle.