Pop Culture

Will K-Fed spill juicy secrets about Britney?

Will Kevin Federline tell all about Britney Spears?

K-Fed is prepared to write a steamy, scandal-filled book about his estranged wife that could include shocking details about wild drinking, alleged drug use, her sexual attraction towards other women — as well as her supposed belief in time-travel, according to the new issue of Star.

However, the aspiring rapper may not write the book if he gets what he wants in a divorce settlement from his famous wife.

“Kevin is either hoping a publisher will pay him big money for the book,” a source told the tab, “or that Britney will cough up more cash than what’s in their prenup [an estimated $360,000 in spousal support plus $7 million from the sale of their Malibu, Calif., home] to keep him from spilling the beans.”

Federline wants sole custody of their two children as well as a settlement of at least $20 million, reports Star, and is alleging that he can “prove that Britney is an unfit mother” by revealing her partying ways both while she was pregnant and when their babies were born.

As part of his evidence against Spears, Federline is reportedly prepared to use a video he shot — which has appeared on YouTube — in which Spears babbles incoherently.

“Kevin says he filmed it just a week before Brit filed for divorce,” a source told the Star. “He told me, ‘I want the world to see that Britney is an unfit parent and that she’s not in her right mind.’”

Sweet harmony?Jessica Simpson and John Mayer hope to make beautiful music together.

The on-again-off-again couple is planning to record a duet, according to Life & Style Weekly.

Former reality show star Simpson asked Mayer to croon with her for the soundtrack to her new movie, “Blonde Ambition,” reports the mag, and he agreed.

“Jessica has high hopes for the movie,” an insider told L&S. “They’re still denying they’re even dating. So of course they’re going to deny they’re recording a song together.”

Notes from all overLooks like another on-again-off-again couple may be on again. Heather Locklear and David Spade went on vacation together in Hawaii, according to In Touch Weekly.  . . . A white grand piano once owned by Elvis Presley is being auctioned off by FreeSell.com, which believes it’s worth $5 million.  . . . Travis Barker is commenting on the fight between his estranged wife Shanna Moakler and Paris Hilton. “I got out of a bad relationship where someone was unfaithful and I went to dinner with someone,” the Blink-182 drummer told Complex magazine. “I went out to a club with someone. That’s normal for a dude who just gets divorced. . .. I never thought I would be separated from my wife and I’d be with another girl and it’d be all over the tabloids and my wife would be knocking her out.  When all that happened, it was a trip, and to this day I think the paparazzi know that I don’t want any part of it.  But I can’t think of better press than a girl beating up another girl over me, so I had to embrace that.”

Jeannette Walls Delivers the Scoop Mondays through Thursdays on MSNBC.com