A shocked-looking Craig giggled as he readjusted his clothing.
In between laughing, Shirley remarked: “Oh, well that’s a treat for you!”
The cast of the Strictly Come Dancing tour are in Glasgow today and tomorrow, before heading to Nottingham and London to end the tour.
Earlier this week, the show’s host Stacey Dooley, 32, spoke out as one of the Strictly stars was forced to quit the tour early.
Coronation Street actress Catherine Tyldesley, 36, was absolutely “heartbroken” when she announced her early exit on Instagram following an injury.