Star Tracks - Wednesday, September 5, 2007

After wrapping her Louisiana-based film Major Movie Star and a brief stay in Los Angeles, Jessica Simpson touches down in New York on Wednesday where she met up with BFF Ken Paves for a lunch at Nobu.

Earlier, after dining with pal Vivica A. Fox, Jessica Simpson gives another best friend (her maltipoo Daisy!) a stylish lift through Los Angeles International Airport on Tuesday.

Demi Moore gets all glammed up with Mischa Barton Tuesday at the Une Journée à Paris party hosted by jewelers Van Cleef amp Arpels at New York's Hammerstein Ballroom. The star-studded fete marked the kickoff of Mercedes-Benz Fashion Week.

After doing the film festival circuit in Europe, Brad Pitt takes son Maddox, 6, out for an all-American pastime – baseball! The father-son duo cheered on the New York Yankees, who defeated the Seattle Mariners on home turf Tuesday.

He may have been lying low all summer, but Jake Gyllenhaal makes a rare post-Labor Day appearance in Beverly Hills on Tuesday. Up next: the actor's latest film Rendition, costarring Reese Witherspoon, is due in theaters Oct. 12.

Also enjoying the glittery baubles at the Une Journée à Paris bash: Ashley Olsen, who traditionally makes the trip East to take in the runway shows during New York Fashion Week.

Is she going for the Amy Winehouse beehive? Kate Beckinsale achieves the perfect lift while hanging out in Santa Monica on Monday.

After spending time with his dog Sid, Orlando Bloom finds supermodel company in Elle Macpherson a refreshing change at Tuesday's GQ Men of the Year Awards at London's Royal Opera House.

While wife Demi enjoys the New York City nightlife, Ashton Kutcher battles urban traffic as he continues shooting his comedy What Happens In Vegas . . . on the streets of Brooklyn Tuesday.

New mom Bridget Moynahan takes her 2-week-old son John Edward Thomas out for a walk around the block of her Pacific Palisades, Calif., neighborhood on Tuesday.

While mom Gwen Stefani is busy preparing for her L.A.M.B. fashion show at Bryant Park, 15-month-old Kingston literally has dad Gavin Rossdale's ear during their father-son outing in New York City on Tuesday.

Topping off her pale Rodarte dress with a Bvlgari tiara, Keira Knightley looks every bit the regal beauty Tuesday at the London premiere of her new film Atonement.

Though she canceled an upcoming appearance on the VMAs and her U.S. tour, Amy Winehouse makes one professional engagement – a surprise performance of her song "Love Is A Losing Game" at the Mercury Music Prize awards in London on Tuesday.

Rather than taking her regular ride home, fitness buff Madonna extends her workout with a bike ride following a session at her London gym on Tuesday.

Ashlee Simpson and boyfriend Pete Wentz stay in step during the last days of summer, embarking on a shopping excursion in West Hollywood on Friday. Both musicians have a busy autumn planned: Simpson's new album drops in November and the Fall Out Boy bassist will head to Australia with his band at the end of the month.

Cameron Diaz takes fashion one step further, matching her sweatshirt to her ride as she continues filming What Happens in Vegas… in New York on Tuesday.

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