Celebrity mouthpieces more than earned their moolah this week as they shot down reports ranging from the purchase of a ridiculously expensive yacht to figure-firming liposuction. Here's the latest in star rebuttals:

Are do-gooder duo Brad Pitt and Angelina Jolie planning to hit the open seas in a massive yacht worth more than the gross national product of some of the countries they're trying to save?

So claims the London Sun, which says the prepossessing parents of Maddox, Pax, Zahara and Shiloh have coughed up close to $140 million (no, that's not a typo) for a 240-foot, three-deck ship currently being crafted in Italy.

For that bargain-basement price, the boat will come equipped with six bedrooms, a swimming pool, helicopter-landing pad, marble and gold trimmings (natch) and a gym.

But you might want to hold off sending Brangelina a bottle of champagne to smash over the bow of the luxury liner.

When MSN.com contacted Pitt's rep for comment on the yacht yammering, she was quick to dismiss it as so much fiction, insisting to us that it's simply "not true."

Meanwhile, another big name who shares the Jolie-Pitt's twin passions for altruism and orphans is also in denial mode.

According to Life & Style, Madonna is on her way back to Malawi, where she adopted 1-year-old David amid much hubbub in October, to meet with his biological dad and perhaps find him a new sibling.

"She intends to adopt another baby soon, but first she wants to repair her image from all the bad press she got over David's adoption," says a mole. "She plans on having David's father be part of the extended family. She wants to show that her adoption was an unselfish act of love and not what it was portrayed as in the media."

But the Big M's spokeswoman is brushing off the adoption talk, insisting to the New York Post, "Madonna is going to Africa to continue her work with the Raising Malawi organization. She is overseeing the building of a children's health-care center. She is absolutely not adopting another baby."

In related news, Madonna's former Kabbalah convert Britney Spears is nixing tabloid talk that she went under the knife to get back into shape.

The new issue of Star alleges the almost-ex Mrs. Kevin Federline has spent $130,000 on "head-to-toe" plastic surgery, including boob and nose jobs and liposuction on her butt, thighs, chin and stomach.

A be-wigged Brit was reportedly spotted in the vicinity of the Advance Lipo Dissolve clinic in Las Vegas several days ago, which touched off rumors that she'd undergone some serious fat-sucking.

But her rep insists to Us Weekly that she's slimmed down without any nipping or tucking, a point the newly svelte rehab grad drove home Wednesday after feeling the burn at a Los Angeles dance studio.

Paparazzi caught the erstwhile pop starlet emerging from her workout session looking sweaty and feeling thirsty (she toted a bottle of water in one hand and a Red Bull in the other).

By the by, Spears is also rebuffing reports that she has her eye on L.A. Lakers star Luke Walton. A shutterbug cornered her this week while she was cruising around Los Angeles with her cousin Ali and asked about the rumblings. Turns out it's Ali, not Britney, who has the crush on the b-baller.

Alas, the cousins' recent forays to the Staples Center have been in vain: Walton's rep tells Us that he's taken.

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