Madonna is set to embark on  a new tour inspired by her New York City roots, it's been reported.

The singer is apparently finalising details for the jaunt, which will begin late next autumn and last six months. She has also been offered a Las Vegas residency worth $1 billion.

Madonna is understood to have held auditions for prospective backing dancers in London last week.

"It's going to be her biggest, most unexpected tour to date,” a source told the Daily Mirror. “She is going back to her New York City roots, with a street/ hip-hop feel, and wants to make it a physical, danceheavy set of gigs.

"Madonna is in peak condition so the gruelling aspect of life on the road isn't a problem.”

Madonn'a last tour, Sticky & Sweet, concluded in Tel Aviv last September, and grossed an estimated $408 million.