Britney is in Madonnas Sticky and Sweet video

britney spears going to film madonna shoot Britney Spears will soon collaborate with Madonna again, and the embattled singer is psyched to reunite with her idol, says a pal.

The pop icons are teaming up to film a segment that is expected to be part of Madonna's upcoming Sticky & Sweet tour. "Britney is excited, but in a grown up way,” says the source, who has seen the singer through her recent ups-and-downs. "She has come a long way in the last year.”

According to the source, Spears, 26, who used to make headlines for her late-night outings and reckless driving, has been showing new signs of maturity. "She has settled down and is full of life but not childish,” says the pal. Under the supervision of her father, Jamie, Britney regained overnight visits with her sons, Preston, 2, and Jayden, 1, and has also re-teamed with her former manager, Larry Rudolph.

"Working with Madonna is a dream, but I think she feels like it’s one she’s earned," says the pal. "She’s respectful but full of her own ideas about the work."

The friend also maintains that Spears has also regained her focus, both mentally and professionally. "I think that so many people have no idea that Britney is fully aware of what’s going on. She may not always have been, but she is now," says the pal. "And she is - if not in control - in partnership with her father and her managers in her future."

Cameras started to roll today on the video that Britney Spears is making for Madonna's upcoming Sticky & Sweet tour, which, sources tell E! News, will be the opening video for each show.

The "Are you ready to rumble?!" video, if you will.

The shoot took place today at the Lot in West Hollywood, the former site of Warner Hollywood, United Artists and the Samuel Goldwyn Studios.

An on-set source said that Britney arrived at around 9 a.m. and was holed up in her dressing room by 9:30. The "Toxic" singer didn't start shooting her scenes until noon.

We're told that the 26-year-old mother of two acted "very professional" throughout and, a day after the shoot was postponed due to technical difficulties, everything seemed to be back on schedule.

Meanwhile, despite rumors that Madonna was going to wing her way west for a quick set visit, the Material Girl stayed put in New York today. According to a witness privy to her comings and goings, she went to her studio this morning and then returned to her Manhattan apartment.

More details have surfaced about what exactly Britney is doing with Madonna for her "Sweet & Sticky" cameo(s). Eonline.com describes one of the two scenes saying: "Britney, partially disguised by a gray hoodie, walks into the elevator. As she starts traveling upward, she seems particularly nervous and anxious. The popster starts pacing back and forth. Then she progresses to kicking and smacking the walls, all frantic-like. She screams into one of the cameras. Then she starts climbing the wall, pulls down her hood and, into another camera, says: "It's Britney, bitch." But according to other reports, this may just be the tip of the iceberg.

The Sun, the site that broke the Britney-Madonna cameo news first, claims this isn't the only scene Britney will be featured in. The next scene will have your draw drop to the floor, making their 2003 vma kiss look "tame."

Britney & Madonna "will perform a mash-up of Madonna's track 'Beat Goes On' and Britneys 'Piece Of Me,' while the two are unwrapped from costumes that can only be described as bondage mummy. The pop duo will be wrapped in bandages which will then be unraveled by leather thong-clad male dancers."

An on-set source revealed: "It's absolutely classic Madonna. Probably the raunchiest stuff she has ever done. It leaves nothing to the imagination and will be very controversial. Britney and Madonna are unwrapped like mummies, to appear together almost naked apart from tiny leather bondage pants and knee-high boots. They then dance closely together, pressing their hands and bodies together. There will be big rows over whether it is sexy, shocking or both."

Interesting concept. Controversial is Britney's middle name. Well, Jean is, but you get the picture. Can't wait to see!

Source: People.com Eonline.com