Stop it!!!!! Britney had already flopped by the time she went to Vegas (and her new stint was flopping in sales apparently). The one who made Vegas what it is now was Celine Dion 15 years ago when she decided to go there doing the biggest show there has ever been there and after having the second best selling album of that year in the world. She definitely didn´t go there to retire :) She was bigger than any of these guys still at that time.