Award-winning vocalists Usher, Justin Timberlake, and Leona Lewis are in discussions to perform at a Michael Jackson tribute concert taking place at London’s O2 arena later this summer.

“Executives want to stage a touching tribute to Michael and think The O2 would be a fitting location,” a source spilled The Sun.

“Huge stars such as Leona, Usher and Justin have expressed enthusiasm about the project. It will be a celebration of Jacko’s life through his music.”

The insider added, “The producers want to avoid a sombre memorial tone and intend the evening to be a joyful event focusing on Jacko’s extraordinary legacy.”

No word on when the proposed tribute might take place.

Usher filed for divorce from his wife of two years, stylist Tameka Foster, just a week ago — but you’d never guess it from the beaming smile the R&B crooner is sporting in this new “Got Milk?” ad for the Body By Milk nutritional campaign.

“The protein and nutrients in low fat milk help me build muscle and stay fit,” the “Nice & Slow” singer says in the ad.

Ush is currently putting the finishing touches on his still-untitled upcoming album, the follow up to his 2008 LP, Here I Stand.

(If you’re interested, SandraRose.com has a whole boatload of updates on Usher’s sure-to-get-ugly divorce from Tameka, 38.)

The star, whose full name is Usher Raymond IV, filed divorce papers with the Superior Court in Atlanta, Georgia.

The 30-year-old Grammy winner and his wife, 38, married in August 2007. The couple have two sons together, Usher Raymond V, 18 months, and Naviyd, 6 months.

“A lot of that is because Usher has been in Vegas recording his new record. He’s done his best to keep Tameka away,” a source tells PEOPLE.

Tameka, on the other hand, is not willing to give up on their marriage. “She’s been in his life for so long. She’s very loyal to him. Tameka is the type of woman to stick it out,” the insider adds.

A hearing is set for July 15.

On Tuesday, Usher commented on the Chris Brown photo on Jermaine Dupri’s YouTube channel, Living The Life.

“I’m a little disappointed in this photo,” Usher said. “After the other photo [of a woman believed to be Rihanna, following the incident, was posted on TMZ]? C’mon, Chris. Have a little bit of remorse, man. The man’s on jet skis? Like, just relaxing in Miami?” Usher asked.

Yeah…that sounds about right. Unfortunately, Usher has decided to take back his remarks.

On Wednesday, Usher released a statement saying: “The comments made during a recent recording session amongst friends were taken out of context and blown out of proportion. I apologize on behalf of myself and my friends if anyone was offended.”

Tameka Foster-Raymond, wife of R&B star Usher, is recovering from a heart attack she suffered just before undergoing plastic surgery last weekend, The Associated Press has learned.

Last Friday, Tameka went into cardiac arrest while being anesthetized for a liposuction procedure at a hospital in Sao Paulo, Brazil, a rep for the plastic surgeon tells the AP.

The 37-year-old celebrity stylist, a mother of five, was “revived in less than a minute by heart massage,” placed in an induced coma, and taken to the intensive-care unit, the doctor’s rep says.

She remains hospitalized.

Tameka Foster, wife of R&B star Usher, is in stable condition after suffering complications from cosmetic surgery in Brazil over the weekend.

“Tameka Foster is in stable condition after suffering complications from routine surgery in Brazil,” Usher’s rep said in a statement on Monday. “Her husband Usher is with her at the hospital. No further details will be released, and the family requests privacy at this difficult time.”

Dr. Gabriel Hunt, a neurosurgeon of LA’s Cedars-Sinai Medical Center, arrived in South America to treat the 37-year-old celebrity stylist.

Usher was forced to pull out of a scheduled performance at Clive Davis’ pre-Grammy party.

Tameka recently gave birth to the couple’s second child, Naviyd Ely Raymond. Their first son. Usher Raymond V, was born in November 2007.

Music stars Usher, Keith Urban, and Natasha Bedingfield are set to kick off the new NFL season with a free concert expected to draw thousands of eager football fans to Manhattan’s Columbus Circle on Thursday afternoon.

The NFL will air portions of the NFL Kickoff Show live on ABC prior to tonight’s game between the defending Superbowl Champions the New York Giants and the Washington Redskins at Giants Stadium in East Rutherford, New Jersey.

Despite being illegally downloaded over one million times, Usher’s latest release Here I Stand is poised for a #1 Billboard debut next Tuesday. Atlanta’s King of R&B became the latest celeb to send shockwaves through NYC’s Bryant Park with a performance of his hit “Love In This Club” on Good Morning America of Friday.