Which big names have supposedly been a mite high-maintenance, and which have been downright Machiavellian? Here's the latest:

If we didn't know better, we'd suspect someone out there was trying to paint Kate Hudson as something of a diva.

Just days after Us Weekly accused her of being "just awful" to Anne Hathaway on the set of "Bride Wars," the New York Post claims she was acting "nasty and rude" at a Manhattan shindig late last week.

A snitch contends that the actress blew into a soiree for Rachel Zoe's new Bravo show in "an absolutely foul mood. She was almost indignant waiting for a friend to arrive."

When the tardy pal turned up, they got into an elevator to head to the rooftop fete, but Kate apparently wasn't happy with the lack of personal space.

"In the elevator she kept screeching, 'I'm freaking out! It's too much!' while waving her arms around,'" tattles the spy, who adds that the usually smiley star also skipped the press line and asked for a bodyguard once inside.

Hudson's rep, however, vehemently denies the source's version of events.

"This is all ridiculous and completely untrue," the publicist scoffs to the paper. "Kate did go to Rachel's party to celebrate her new show, had a great time and left with the group of girlfriends she came with."

Heather Mills poses with the last creature on Earth who doesn't mind being seen with her.

Meanwhile, someone who'd probably be hard-pressed to produce a group of girlfriends these days is Heather Mills, whose former publicist and pal is taking delight in pummeling her in the press.

"Heather is a calculating, pathological liar and the biggest bitch on the planet. She not only misled me, she misled the entire world," Michele Elyzabeth indelicately informs Britain's News of the World. "At one stage we were so close I viewed her as the daughter I never had. Today I think of her as the witch I wish I'd never met."

Part of the rep's ire comes from the $300,000 she claims the onetime Mrs. Paul McCartney still owes her for services rendered. (They parted ways in July after four years together, with Elyzabeth telling "Extra" at the time that Mills had become an "impossible person.")

The spokeswoman believes everything comes down to money for Mills, who received nearly $50 million in her monumentally acrimonious divorce from the now happily rebounded music legend.

"She is a gold digger," she declares. "I'm certain her marriage to Paul was all about the money. ... I call her 'The Black Widow' now to my friends."

Oh, come on, Michele, don't hold back -- tell us how you really feel.

"That witch tricked me into spreading lies about Paul," she fumes. "She's a bitch."

One of the stories Elyzabeth claims she was "conned" into leaking: "I stood up for her, insisting Paul wasn't paying her [during the divorce battle]. But it was a pack of lies."

In the divorce judgment, Heather's monetary demands were labeled "exorbitant" and her philanthropic claims were called into question (by the by, the London Sun just zinged her for allegedly failing to follow through on a promise to donate a significant portion of her settlement to the Adopt-A-Minefield charity).

"In the light of the husband's generosity towards her, the wife's behavior is distinctly distasteful," ruled the judge. "It damages her overall credibility." 

Mills hasn't responded to her ex-flack's attack.

Alec Baldwin blabs to reporters at an event in New York.

And finally, Alec Baldwin's mouth continues to get him into trouble. For the last few days, the volatile "30 Rock" actor has been trading barbs with Greg Garcia, the creator of "My Name Is Earl."

It all started with the New Yorker's epic profile of Baldwin.

In the piece, he discussed what he deemed NBC's failure to promote the terrific Tina Fey-helmed sitcom and claimed the network has "gone out of their way to wring the last drops out of 'My Name Is Earl' and 'Scrubs.' Those shows are done! They're cooked! Yet they do a one-hour episode of 'Earl.'"

That didn't sit well with Garcia, who told Defamer.com that Baldwin "sounds like a psychotic narcissist" and pointed out that the reason why NBC "occasionally puts on an hourlong episode of 'Earl' is because an hour of 'Earl' gets better ratings than an 'Earl' followed by a '30 Rock.' It's called math, stupid."

Over to you, Alec: "My apologies to the cast and crews of 'My Name Is Earl' and 'Scrubs,'" he wrote on the Huffington Post. "In my frustration with NBC's reprehensible promotion of '30 Rock,' I took an unfortunate swipe at both of those shows and that was not cool."

Unable to leave it there, Baldwin adds, "But, for Earl's creator, Greg Garcia, who referred to me as a 'psychotic,' I have only one question. Why are you Scientologists always rendering these medical opinions you aren't qualified to give?"

Small problem with that argument: While "Earl" stars Jason Lee and Ethan Suplee are L. Ron Hubbard boosters, Garcia is not.

"Alec, I can't tell you how happy I am to once again point out that you are an idiot," he responds to Gawker.com. "I'm unable to answer your question about Scientologists because, although I respect anyone's right to their own beliefs, I am not currently, nor have I ever been, a Scientologist."

Garcia then suggests that Baldwin's future salvos might include tossing out "something witty about me creating the show 'Yes, Dear' or just simply a joke about the fact that I'm bald. Both true. As far as you being psychotic, anyone who thinks NBC wouldn't do everything they could to promote a great show like '30 Rock,' which they own, over a show like 'My Name is Earl,' which they don't, is a tad nutty."

Baldwin has yet (emphasis on yet) to fire back.