Now Hugh Hefner wants a turn at telling the saga of Dorothy Stratten, the Playboy centerfold who was murdered by her estranged husband in 1980. Stratten's story has already been chronicled in Bob Fosse's Star 80, NBC's Death of a Centerfold and Peter Bogdanovich's recent book, The Killing of a Unicorn: Dorothy Stratten 1960-1980. "They had nothing to do with what Dorothy was really like," charges Hefner, who has signed Emmy-winning writer-director Marshall Flaum to do a documentary on the crime for pay TV. The film will feature previously unreleased footage of Stratten and, says Hefner, "refute Bogdanovich's claim that Dorothy hated posing in the nude."

Bachelor Party, with Tom (Splash) Hanks and Adrian (T.J. Hooker) Zmed, was a critical flop, but the film's impressive $38 million gross has sparked talk about a sequel. Word is the producers want the next groom to be Zmed, who hosted Hanks' bachelor party in the original. Not so fast, says Zmed. "That party scene took a month to shoot," he complains. "I thought I'd never want to go to another party again. But if the money's right, I might be willing." Something in the mid-six-figure range plus points would suit him, Zmed suggests. Looks like party animals are becoming a more expensive breed.

In his next feature, Killers, Charlie (Red Dawn) Sheen and Maxwell Caulfield play high school seniors who go on a weekend murder spree. "I hope it won't be seen as a slash-and-trash film," says Charlie, who worries that after his shoot-'em-up role in Red Dawn, he'll be typecast as a psychopathic killer. "My dad, Martin, had that problem after he played villains in films like Badlands, Apocalypse Now and The Little Girl Who Lives Down the Lane," Charlie notes. "I'm shooting to do a romantic comedy next." That's pretty modest. His dad wound up playing a President.

When Garbo Talks is released Oct. 12, don't expect to see a screen credit for the woman who appears briefly as the present-day Garbo at the end of the movie. In keeping with the Garbo mystique, MGM won't reveal her identity. But an insider says the mystery woman is playwright-lyricist-actress Betty (Sing-in ' in the Rain) Comden. Extras were used for Garbo's other fleeting appearances in the movie...U.S. Olympic gold-medal free-styler Rowdy Gaines plunges into acting with a swim-on role in the Oct. 10 episode of NBC's Search for Tomorrow. Playing himself, Rowdy saves a character named Kentucky Bluebird (Will Patton) from drowning in a lake after a canoeing mishap...Twiggy, who exits Broadway's My One and Only' later this month, already is working on her next project: an album featuring four songs written for her by rocker Hal Lindes of Dire Straits and singer-songwriter Frank Carillo. Twiggy also plans to do an as-yet-untitled film to be directed early next year by Peter (The Dresser) Yates.

Twenty-one years ago this month, ingenue-surfer Yvette Mimieux startled America by exposing her bikinied physique on the cover of LIFE. "In those days women were usually seen from the shoulders up; bellies and thighs were hidden from view," says Yvette, now 40. Times have changed and so have bodies beautiful, including Yvette's. Even more taut than she was then, she fearlessly struck a pose patterned after that 1963 cover in recent publicity photos for her CBS movie Obsessive Love, to air Oct. 2. "Women used to be soft and rounded," says Yvette. "Now body tone and muscles have become important." But she doesn't endorse the current fitness craze fully. "I don't jog or work out with weights," says Yvette. "I do yoga mostly. What's going on with your head is more important than what's going on with your thighs." Yes, but they don't make publicity stills of it.