Oliver and Daniel Horne from Cirencester will present a home-made card to Prince Charlies congratulating him and the Duchess of Cornwall on becoming grandparents to the new Prince George.
The brothers will also hand the Prince of Wales a cuddly toy for the little Prince.
More top news
Gloucester have won the European Challenge Cup Final. The Cherry and Whites beat Edinburgh 19-13 at the Twickenham Stoop.
Two men from Bristol have been sentenced to eight years each for blowing up cash machines at two banks in Wales and stealing over £80,000.
The pair pleaded guilty to their part in the burglary of two banks in which explosives were used.