Singer Beyonce Knowles treated her crew who worked with her during her at The O2.
"Knowles wanted to say thanks to all of the backing dancers, crew and everyone else involved with putting on the six shows," thesun.co.uk quoted a source as saying.
"Between the lot of them they managed to drink their way through more than 17,000 pounds-worth of booze in just a few hours," the source added.