Givenchy dresses have been worn by notably sophisticated ladies for decades, Jacqueline Kennedy Onassis, and the Duchess of Windsor are among the memorable women who've made Givenchy the fashion legend it is today. Recently joining the list is the always stunning and stylish Natalie Portman who had heads turning when she showed up at a Cannes soiree in this elegant and refreshing Givenchy gown. Easily the best dress seen all week, I think she blew it with the shoes but c'est la vie! If you have any high class events coming up, browse the Givenchy 2008 Collection, it features some fabulous designs that will have people dying to know who "dressed" you!

Brad Pitt obviously knows when he's on to a good thing. We're not referring to Angelina Jolie in fact, but rather Tom Ford. Wearing head to toe Tom made Pitt one of the most stylish stars at last year's Cannes Film Festival - actually, make that any year - so it's no surprise he's back this season sporting more of the designer's dapper duds.

Last week Pitt wore a classic made-to-measure Ford black two piece notch lapel wool suit with a white shirt and solid black silk jacquard tie to the Kung Fu Panda premiere. And on Tuesday he upped the ante with an ultra-elegant made-to-measure black mohair blend single breasted peak lapel tuxedo, black silk moiré bowtie, and 18K white gold and diamond shirt studs and cufflinks from Ford's menswear collection to the Changeling premiere. That's what we call stealing the show.

The Cannes Film Festival, which began today in the South of France, has always been more focused on artistic merit than the blockbusters of the Academy Awards; that makes for a much more interesting mise-en-scène in our view. The cool crowd has always gravitated to the Riviera for this annual cinematic happening, not to mention the chance to compete for those little gold palm fronds. Along with the Met Costume Institute Gala it's easily one of the year's most stylish events.

As Cannes enters its seventh decade, this seems like the perfect time for a slideshow of some of the most classic style moments in its vivid history, including this rouge carpet scene from 1998. Fear and Loathing in Las Vegas was nominated for a Palme d'Or that year and its star Johnny Depp sported a midnight blue shawl-collared dinner jacket at the premiere. Meanwhile his co-star Benicio Del Toro (right) stuck to a classic tux, while Depp's date Kate Moss looked kind of like she'd been attacked by an angry emu -- but in a hot way. Click below for the full parade of stylish stars.

Official Selections [Men.Style]

A few months before Princess Diana's tragic death in a car crash in Paris, 80 gowns from her personal collection went up for auction at Christie's. Three of those gowns were purchased by the cable television network WE TV and have been preserved ever since, waiting for the right moment to bring them out as a celebration of her memory and style. Two will be touring the country this fall, the other will be auctioned for charity.

Beginning August 12, this beautiful chiffon evening gown designed by Catherine Walker will go up for auction on E-Bay. Valued at more than $300,000, the Princess wore the gown to the Cannes Film Festival in 1987 and again to the opening of Miss Saigon in 1989. All proceeds from the sale will go to America's Promise Alliance to support a cause close to Diana's heart - helping underprivileged children. America's Promise Alliance is a non-profit organization founded by General Colin Powell to to ensure that all children have the fundamental resources needed to lead successful happy lives.

The auction runs through August 22 and the starting bid is $125,000.

It's been a while since stars were lavished with free gift bags (all the way since the Oscars, how did they manage?). Next up on the swag adventure is the Cannes film festival. The Nikki Beach chain of nightclubs will be creating a temporary nightclub at the Intercontinental Carlton Hotel in Cannes from May 17 to May 28. Nikki Beach at the Carlton Beach will host daytime festivities and the Nikki Club will host fashion shows, premiere parties, and themed events inside the Carlton’s Salon Mediterranean. There will be a daily style area including treatments and samples from Elizabeth Grant, Frederic Fekkai and Face Stockholm. Attendees will also receive a gift bag created by Nathalie Dubois that is valued at over $30,000 and includes Petrossian caviar and a trip to the Le Taha’a private island resort.