Madonna thinks she knows what led to the downfall of Britney Spears.

“It’s a little bit awkward,” she said. “You don’t really know them and you feel a little bit nervous and intimidated.”

Britney Spears got the thumbs up from former duet partner Madonna on Thursday.

In an interview on New York’s Z100, Madonna told host JJ that she is a fan of Spears’ “Blackout.”

“I actually love Britney Spears’ new album. I listen to that a lot,” Madonna said.

 In fact, she does more than just listen. “I usually work out to her record,” Madonna said. “I do a combination of Pilates and dance aerobics.”

Madonna also got candid about Britney’s ex, Justin Timberlake, who contributed to her new album “Hard Candy,” which comes out April 29.

Earlier this month it was revealed that Madonna had given Timberlake a Vitamin B shot. It wasn’t so she could see his bottom, as Z100’s JJ suggested.

“I mean, I’ve seen enough butt so that’s OK,” she sighed. “The reason I gave him a B12 shot is cause we only had a certain amount of days in the studio and I didn’t want him using that as a lame a– excuse not to come to work, OK? It’s got nothing to do with butt, I promise you. Listen, I don’t need to give him a shot to see his butt.”

Madonna also revealed that she has no plans to sing some of her classic songs ever again.

“I’m not sure I can sing ‘Holiday’ or ‘Like A Virgin’ ever again. I just can’t,” she said. “Unless somebody paid me like $30 million or something.”

Madonna talks life, love, and Britney in an exclusive interview with the Yo on E! satellite radio show.

“It is sexy,” she said. “I think it’s got some hard set beats, but there’s some sweetness on top. I like the juxtaposition.”

With rumors circulating that Madonna and Guy Ritchie”s marriage is on the rocks, the couple are trying their level best to rekindle their romance.

The Queen of Pop is going all out to silence the skeptics by organizing a romantic, games night with her film director hubby. Guy has already scored triple points by filling the couple’s 8million pounds London townhouse with red roses.

Madge, meanwhile, has planned a candlelit dinner and told her staff to take the night off. “Madonna and Guy have both had hectic schedules of late so there’s no denying that they’ve spent a lot of time apart,” the Mirror quoted a source, as saying. “While Madonna’s been in LA promoting her new album, Hard Candy,Guy’s been stuck in London on post-production for his next movie, Rock N Rolla. But they’re now back together and relishing proper family time. Madonna has gone all-out to organize a special evening this week, culminating in a romantic dinner and a games night. And once the children are tucked up in bed, Madonna has planned a sexy surprise for Guy in the shape of a new satin Basque,” the source added.

Madonna’s US publicist denied the break-up rumors, saying: “I am delighted to confirm that Mr and Mrs Guy Ritchie remain happily married. All is well and wonderful in the Ritchie household.”

Float like a butterfly, sing like a bee… here’s Madonna proving she’s still The Greatest.

As the Material Girl approaches her 50th birthday this September she shows there’s still plenty of fight left in her.

Far from being on the ropes, she vowed to “kick all of their asses” as she promoted her new single with Justin Timberlake - who is young enough to be her son.

Wearing five-inch heels and boxing gloves, she said middle age was not going to slow her down.

“You’ve got a lot more experience and you tend to not make the same mistakes,” she tells Interview magazine. “It’s great to feel experienced. But I also work with people who are half my age, so I feel like I have to work even harder to keep up with everybody - but the fact of the matter is I can kick all of their asses.”

In a bizarre move, Madge has decided to release her single tomorrow as the theme tune to a shampoo ad, rather than in record shops or online.

The record - Four Minutes To Save The World - is about fighting poverty and disease.

And as boxer Muhammad Ali once said: “A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.”

Well that’s certainly not something anyone could ever accuse Madonna of…