Hayden Panettiere may look cuter than a basket of fluffy puppies being cuddled by baby monkeys, but you don't want to get on her bad side. TV Guide reports the sweet-faced "Heroes" cheerleader turned seriously sour when she spotted an Us Weekly reporter on the Emmys red carpet. Seems Panettiere, 18, who's been spied looking squickily cozy with her 30-year-old co-star Milo Ventimiglia, was steamed over a recent Us item about her bust-up with reality show D-lister Stephen Colletti, and she expressed her displeasure by spouting that she was going to "kill" the correspondent. Her hovering spokeswoman reportedly defused the situation by chastising her, "Not on the red carpet." According to her rep (via E! News), the starlet's apparent homicidal reaction to Us was just "a figure of speech said in a moment of emotion as Hayden came upon a journalist who had previously misreported a personal story."

Mariah Carey at VH1's Save the Music gala (Kevin Mazur/WireImage.com)

"My secret is bleak diets." So says Mariah Carey (via People), as she fielded questions about her sensationally sylphlike figure Thursday night at VH1's Save the Music shindig in New York. But the top-heavy belter, who showed off her curves in a slinky, cleavage-framing violet gown, isn't quite satisfied with her silhouette, conceding, "I still feel like I have a way to go." Just don't expect her to go too far. "I don't feel like you have to be a size zero. We should all just embrace who we are physically," says the surprisingly sensible Carey, 38. "I'm not supposed to be a stick figure girl. It's just not me." Of course, Mariah being Mariah, her health regimen is anything but routine. "I have a wonderful trainer whose name is Patricia, she lives in St. Barts, poor girl," she explained. "People say, 'Only you would fly someone from St. Barts to New York to work out.'" And just what sort of exercise expertise warrants such jet set treatment? According to the chanteuse, "We do water aerobics mostly."

Renée Zellweger had several strapping men beating down her door on Thursday. Too bad they were carrying axes. The New York Post reports the weedy Oscar winner received an unexpected visit from the fire department after a neighbor at her West Side apartment building smelled smoke. The FDNY arrived to find Zellweger warming her bones in front of the fireplace, a contained blaze they proceeded to extinguish. Says a spy, "It seemed very unnecessary."

Sarah Michelle Gellar: domestic goddess? The retired vampire slayer reveals to Self that she's a firm believer in the twin arts of thriftiness and etiquette. "I take my reusable bag to Whole Foods so I get a discount," she enthuses to the mag. "I go to Bloomingdale's on double rewards day. And I always print my dry cleaning coupons before I go. My dry cleaner laughs. He's like, 'You don't have to keep printing them out!'" Mrs. Freddie Prinze Jr. also places a premium on social graces, revealing that she writes thank you notes "for everything, because I know how I feel when I get one in the mail. I'm a gadget person, but I don't e-mail. E-mail is for, 'What time is the flight?' I do it myself. It's my writing on the envelope, and I buy the stamps."

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