Just two weeks into her sizzling Circus tour, it was revealed that Britney Spears will be performing with Madonna when she returns to the Big Apple on Monday (March 23)
“She’ll be singing with Madonna in New York,” the starlet’s stylist David Alexander spilled to In Touch. “It will be ‘Get Together’ and ‘Trouble.’ So, together the song is called ‘Lose Control.’”
The Material Mom may also pop in for one of Britney’s LA shows on April 16 or 17. “It’s supposed to be a surprise!” added David.
Madonna attended Britney’s March 11 gig in New York’s Nassau Coliseum. And back in November, Britney performed with Madonna during her Sticky and Sweet Tour at LA’s Dodger Stadium.
Britney Spears & Madonna are in Another Duet!

Hot pop Star Britney Spear's Pill Binge
Britney Spears reportedly took over 100 pills during a massive 36-hour drugs binge last week, before being hospitalised.
The troubled singer is said to have washed down the huge amount of drugs with a 'Purple Monster' cocktail - a mixture of vodka, anti-flu syrup and an energy drink, before being taken to Los Angeles' Cedars-Sinai Medical Center on Thursday night (03.01.08), according to Britain's Daily Mirror newspaper.
Her hospital dash came after she refused to give her sons, two-year-old Sean Preston and one-year-old Jayden James, back to ex-husband Kevin Federline after a custodial visit.
A source close to the singer said: "She ended up taking 20 Clenbuterol diet pills, 18 herbal speed tablets, 18 Piriton anti-histamine tablets, 12 Vicodin painkillers, 10 sleeping pills and eight antacid reflux tablets.
"She also drank one bottle of Pepto-Bismol, two bottles of NyQuil and two bottles of OxyContin painkiller, and took a further 10 anti-hangover drugs and six Ritalin tablets which are usually used to treat Attention Deficit Disorder (ADD)."
Meanwhile, Britney's estranged father Jamie reportedly "broke down in tears" when he visited his 25-year-old daughter in hospital.
A source told People magazine: "Jamie was incredibly upset. He broke down in tears. When he realised the situation, it just literally broke him down.

Hot Popstar Britney Spears ordered to read the Bible By Her Dad
Britney Spears has been ordered to read the Bible for one hour every day by her father. Jamie Spears – who as co-conservator of her estate has full control of the pop princess’ affairs – has issued the star with a string of rules to ensure she doesn’t go off the rails on her ‘Circus’ tour. A source told 'The Mirror': “Jamie is determined nothing can go wrong with Britney’s comeback. He’s making sure she reads the Bible for at least an hour before she goes on stage and has banned her from using the internet. He’s stopping her from leaving her hotel unless accompanied by a security guard and even though she gets on much better with her ex-husband, Kevin Federline, she isn’t allowed to speak to him without Jamie or her manager there.”