Rumor is Britney Spears and Justin Timberlake are joining Madonna on stage tonight during her L.A. show. Ryan Seacrest broke the news yesterday afternoon during a call to KIIS FM. From E!:

“They are going to be onstage performing with Madonna,” Seacrest said on KIIS-FM host DJ BoyToy Jesse’s Wednesday-afternoon show. “If Justin and Britney end up on that stage with her . . . I don’t know if I’ve ever seen anything quite like that before.”

Seacrest said that he should have more details on his KIIS morning show tomorrow: “Expect some real serious surprises.”

I’ve thought of about a million different ways this thing could play out tonight and every single one ends with Britney humping Justin’s leg like a dog. This is gonna be a freakin’ disaster.

At last honest pictures of Jessica Biel last week at the Packers game, getting her ass grabbed by a friend just inches away from boyfriend Justin Timberlake. It’s nice that Timberlake brought along his best platonic friend to a football game. There’s no need to ask if Jessica took this girl back to her hotel room and completely got it on with her, because of course she did.

Even though there was some talk he’d be shacking up with Jessica Biel soon, Justin Timberlake is “still prowling” according to Page Six.

Spies saw Timberlake at a roof party at the Tribeca Grand “sitting with a bronze-skinned brunette with long brown hair all night at a cocktail table near the dance floor.”

The source added, “They were obviously into each other. It was just the two of them … he had no entourage at all.”

Another source (one familiar with Timberlake’s [bleeping] habits) said, “He is notorious. He will fuck [bleep!!!!shit! bleep!!!!] anything.”

I absolutely believe the second source (Britney Spears and Cameron Diaz come to mind). Timberlake’s rep would not comment on his personal life.