TINSELTOWN SPYWITNESS.

Byline: Jenny Peters and Joel Stratte-McClure

LINDSAY'S `LUCK': Giggling girls were giddy with excitement Tuesday night in Westwood, as Lindsay Lohan brought her latest movie into UCLA territory for its grand premiere.

The Gucci-clad queen of teens knows just who her peeps are, and she worked the crowd accordingly, signing autographs and spinning a huge wheel to pick out the lucky few that won seats inside the cavernous National Theater where ``Just My Luck'' unspooled.

``It's kind of like a coming-of-age thing for me,'' the 19-year-old actress said, describing the romantic comedy in which she plays an all- grown-up New York City publicity agent.

``I mean, you can only act as if you're in high school for so long, I feel. But it kind of was the perfect thing for me, because it's not a dark film, so I can still keep the fan base that I've grown with. I still have a young audience to look out for, and this is acceptable for the younger audience, and for people that are older than me. It was hard for me to find that kind of film, so it was nice that I found it,'' Lohan explained.

In keeping with that younger theme, Lohan eschewed a male escort and instead brought little sister Ali to the festivities, along with mom Dina. They were joined by her co-stars Makenzie Vega (and her older sister, Alexa), teen heartthrob British band McFly, handsome Chris Pine and the film's pretty trio of Missi Pyle, Samaire Armstrong and Bree Turner.

Later at the W Hotel after-party, Lohan did a quick change and greeted a very blond Kelly Osbourne, then chatted with Garry Marshall, who will direct her next film, ``Georgia Rule,'' a very serious look at child molestation. We'll guess that one won't have those teen fans crowding outside the premiere, but, as Lindsay says, a girl's gotta grow up sometime, doesn't she?

PARTY GIRLS: What is a well-connected star to do when there are parties all over town on a Thursday night in L.A.? Go to them all, of course.

That's just what Anne Heche and Alana Stewart did, first hitting the Target Couture Collection (yes, you read that right -- Target has headed to high fashion) party at the latest Hollywood hot spot, Social, before moving on to the even bigger bash, Roberto Cavalli's Vodka launch at a private mansion in the Holmby Hills.

``One Tree Hill'' star Sophia Bush hosted the Target soiree. Getting in on being the first to have the Target collection were Lara Flynn Boyle, Lacey Chabert, Gabrielle Union, Stacy Keibler and Kristen Bell; and even singer Bush checked out the bull's-eye-inspired styles.

Eschewing fashion for booze across town, Italian design legend Roberto Cavalli expanded his universe from fabulous gowns to premium vodka, with a backyard party that drew the cream of the Tinseltown going-out crowd.

``Why not do vodka? People love it!'' Cavalli said with a grin, in between kissing the bevy of beauties who flocked to his party wearing his gorgeous and colorful dresses.

From Lindsay Lohan to Mischa Barton, Cindy Crawford to Rosario Dawson, statuesque Aisha Tyler and Natasha Henstridge, pretty women were everywhere. Some even brought the family -- like Lisa Rinna with hubby Harry Hamlin and his handsome son Dmitri; and Nicky Hilton with her mom and dad, Kathy and Rick Hilton.

Only one big socialite name was missing: Paris Hilton was off at yet another big party happening in town on Thursday night. She chose fast thrills over fashion and vodka, hitting the Tatsu roller coaster launch event at Six Flags Magic Mountain, proving that in the world's biggest party town, on any given night there really is something for everyone.

THE BOOMERANG EFFECT: OK, so Nicole Kidman, Hugh Jackman and Naomi Watts weren't at the Avalon Hotel Thursday night.

But that's because they're already big stars. And the second annual Australians in Film Breakthrough Awards was honoring fresh faces Jacinda Barrett (``Poseidon'') Leigh Whannell and James Wan, the writer/directors of ``Saw,'' and Jesse Spencer, that hot hunk on Fox's hit ``House.''

Which one is he? The cute blond M.D. with the Australian accent whom you probably thought was British. Just like you probably think Hugh Laurie is American.

But he's not. Laurie does an American accent on the show, but he's really British.

Confusing, isn't it?

According to ``House's'' Jennifer Morrison, who presented the bright yellow boomerang-shaped award to Spencer, his Aussie accent caused an ``accent disaster.''

Turns out that the producers wanted an American actor but loved Spencer. So they asked him to do a British accent in rehearsal, which he did.

But that totally threw off Laurie's American accent. So they finally let him keep his real accent.

``It took us a while to get used to the new vocabulary,'' admitted Morrison.

``When Jesse kept asking where his `jumper' was, we were relieved to find out he wanted his sweater, not a little girl's dress.''

Funniest moment of the night? When Whannell accepted his boomerang and said, ``It's really wonderful to be honored and respected by the Australian film community ... but apparently not respected enough to spell my name right.''

Which caused the crowd of directors, producers and actors -- including Caroline Goodall, Ethan Embry and Jonathan LaPaglia -- to practically spit out their Australian monk-made Zarephath wine.

``I guess it's just part of the Aussie sense of humor,'' continued Whannell.

``Hey, let's drop the `h' and see how he reacts!''

Well, it worked.

CAPTION(S):

4 photos

Photo:

(1) ALEXA and MAKENZIE VEGA: Sister act 2

Lester Cohen/WireImage.com

(2) HECHE: On Target

Kevin Winter/Getty Images

(3) MORRISON and SPENCER: Accent on Aussie films

Stephen Shugerman/Getty Images

(4) ALI and LINDSAY LOHAN: Sister act 1