The Newsroom — Madonna makes a surprise visit at Britney's concert and the princess is happier than ever while on tour. more info

After Britney showed up at Madonna's tour in Los Angeles last November, the material mom returned the favor showing up at the pop princesses' sold-out Circus tour stop Wednesday night in New York City ” but just as a spectator. more info

Guardian Music — The most expensive seats for Michael Jackson may be a modest £75, but that's irrelevant if you can only buy them at inflated pricesIt's a big year for big tours. Just last week Michael Jackson announced his "final" 10 shows at the O2 (before addin... more info

PopSugar — Britney Spears had a surprise guest at her Long Island show last night - her friend Madonna came to see the Circus. This morning there's even more Spears excitement with the release of her new video for "If U Seek Amy". The song is already famous for... more info

Rolling Stone — As the original Queen of Pop, the specter of Madonna looms large over everything Britney Spears does, whether the younger star is courting controversy with saucy lyrics, writhing her way through a salacious video or importing nuggets of Eastern cultu... more info

MTV.com News — 'We may go back to the clubs permanently,' Larry Mullen Jr. jokes following set.By Benjamin Wagner U2 perform at the Somerville Theatre in Boston on Wednesday Photo: MTV News BOSTON — "It was an unwieldy event," Bono told MTV News' Sway ... more info

ContactMusic — MADONNA and GUY RITCHIE have reached a deal in their custody battle - finalising an agreement which will see the couple's children living in America with their ... more info

Pop Crunch — Madonna made a surprise appearance in the audience as Britney Spears’ Circus World Tour sit up the Big Top on Madge’s home turf of New York City Wednesday night. According to BritneySpears.com, the pop tart was thrilled to have the Material Girl ... more info

The Red Radio — The Flaming Lips with Stardeath And White Dwarfs covered the Madonna classic Borderline. The track was recorded as part of Warner Brother's Covered, A Revolution In Sound: Warner Brothers Records. The collection of tracks features current WB arti... more info

Perez Hilton — Between Kabbalah classes and romancing her new Brazilian lapdog, Jesus Luz, Madonna has been busy browsing townhouses in NYC's Upper East Side. A Material Girl always wants more more more! After much searching, it seems Madge has finally found a sui... more info