Photoshopping celebrity photographs

"Is that a beer can at Prince Harry's knee? Which brand? Now, thanks to the smacker (still resounding on the Internet) he delivered on male admirer Rocky Bennett's left cheek for a bottle of beer, we know about his favourite brand. It's the 'sufficiently expensive' Stella Artois. I want to use your photo editing service to give him and Chelsy a bottle to enjoy in the car park!"