A BILLY Connolly lookalike fooled locals and city visitors after they mistook him for the real thing.

The mystery man was seen in Glasgow city centre yesterday afternoon.

He was mobbed by people on Buchanan Street, who stopped the 'Big Yin' to ask for a picture.

But just streets away more savvy punters were delighted when they stumbled across the REAL comedy legend.

Billy was back in his home city to attend in the Commonwealth Games' Opening Ceremony earlier this week.

A flurry of pictures with the real comedian - and his lookalike - appeared on social networking sites yesterday.

Both were dressed in black and wearing Billy's trademark round glasses.