Eyeliner isn't the only thing Ashlee Simpson finds attractive in a guy. Seems she also has a soft spot for sci-fi geeks. People reports the Force was strong when the remodeled warbler celebrated boyfriend Pete Wentz's 28th birthday Tuesday night at his New York bar Angels & Kings. "Ashlee got me a 'Revenge of the Jedi' poster," the Fall Out Boy frontman excitedly tells the magazine. "I'm kinky and it's like, in 'Star Wars' originally 'Return of the Jedi' was called 'Revenge of the Jedi,' and then George Lucas decided that [revenge] was not a Jedi-like trait. So she bought it for me. I think it's sweet. It's awesome." Not so awesome, however, are musical couples who work together, according to Wentz. He tells MTV News there's no truth to reports he's collaborating with Simpson on her forthcoming album. "That's pretty much the silliest recent rumor I have read," he scoffs. "Mostly [because] I want no part in selling a relationship."

Just what is it about Josh Hartnett that makes him so popular with the ladies? Is it his downy mustache and floppy hair, which call to mind a latter-day Clark Gable, or his manly eyebrow, which is reminiscent of the lovable Bert from "Sesame Street"? Whatever it is, the recent cuddle-bunny partner of Penélope Cruz hasn't been lacking for female attention. Just days after the New York Daily News spied Hartnett with a blond model on his lap, the London Daily Mirror claims Sienna Miller was "cozying up" to him Tuesday night while partying at a local hotspot. The starlet, whose thigh the actor is not unfamiliar with, has lately been keeping company with musician Jamie Burke.

It's a new movie and a maybe a new love interest for "Fantastic Four" fireball Chris Evans. The New York Post reports the "Rise of the Silver Surfer" star made a beeline for "Friday Night Lights" looker Minka Kelly at a Los Angeles shindig last week. By evening's end, the pretty pair was purportedly "making out in a corner."

Michelle Trachtenberg is broadening her dating horizons. Buffy's onetime whiny little sis, 21, is now dating a New York nightclub manager named Brandon Hirsch, reports People. Trachtenberg, whose exes include actor Shawn Ashmore and the aforementioned Pete Wentz, spent last weekend in Las Vegas sucking face with her 26-year-old beau. "She's becoming bicoastal and spending a lot more time in New York to be with him," an insider tells the magazine. "She wants to be really low-key about the relationship since this is the first time she's dated someone who is not in the business."

Katherine Heigl, currently riding high off the success of "Knocked Up," has checked an important item off her bridal to-do list. According to Us, the actress has picked out what she's going to wear when she swaps vows with musician Josh Kelley in December, plunking down $8,000 for a traditional wedding gown from a swanky Beverly Hills boutique. "She wanted something modest," the shop owner shares with the mag. "She said, 'There are times when you should be sexy, but a wedding is not it!'"

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