her 15 million a year is just peanuts compared to the 100 million or more she might get if she goes to VEGAS!She's been negotiating with one of the Caesar group properties to appear in a Celine Dion-type show.
according to TMZ Sources connected to the negotiations tell them ... from Brit's standpoint, "The deal is a go. There are several stipulations that could throw a monkey wrench in the deal, but it's basically done."
One of the outstanding issues -- exactly what Britney will be doing. There's back-and-forth over whether she will just perform on stage at a big theater multiple nights a week, or whether she will also make appearances at functions in the hotels, nightclubs and pool day clubs.