Singer Sir Rod Stewart was winding up Rangers fans from the Celtic end at today's Semi Final. 

In a video posted online by The Sportsman, the 73-year-old can be seen waving at the Rangers fans and blowing them the odd cheeky kiss.

The caption read: "Rod Stewart was on a wind up mission against the Rangers fans today."

The Gers fans were not best pleased with several shooting the best-selling artist a few filthy looks.

Celtic stormed to victory with a 4-0 win over the Light Blues at Hampden this afternoon, securing their place in the Scottish Cup Final against Motherwell.