SIR Rod Stewart surprised diners at a Glasgow restaurant and cocktail bar ahead of Saturday's Celtic game. 

The 79-year-old music icon stopped by Kelvingrove Cafe to enjoy a Wolfie's Rock 'n' Roll Old Fashioned. 

The National:

Bar owner Barry Oates has created the special drink using the singer's whisky Wolfie's, which he co-founded with Duncan Frew.

Stewart stopped at the Argyle Street spot on his way to the Celtic v St Mirren Game at Celtic Park and was pictured with staff and diners.  

The National: Sir Rod Stewart with Wolfie's with co-founder Duncan Frew and friend Johnny MacLaughlinSir Rod Stewart with Wolfie's with co-founder Duncan Frew and friend Johnny MacLaughlin (Image: Wattie Cheung)