BRITNEY Spears' family fears her bad Las Vegas track record?

BRITNEY Spears' family are concerned about her a five-year concert residency in Las Vegas worth $100 million per year.

Britney's father, Jamie Spears, wants to make sure she doesn't get caught up in that lifestyle.

"She has a bad track record there. This will be a bad temptation for her," a source said.

"They intend to set her up in a mansion in the Nevada suburbs. There will be bodyguards, her father, her manager - they will escort her to and from the show and watch her every move. They'll make it like her life in California, just hotter."

The star is said to be close to agreeing to a $100 million residency with the Caesars.