The tradition of celebs donating their famed Hermès Birkin bags started after Jane Birkin auctioned off her namesake purse, followed by Princess Stephanie of Monaco contributing a bag that belonged to her mother Grace Kelly.
Campbell's donation takes place November 10, when her pale green alligator bag will go up for auction. Proceeds will benefit The White Ribbon Alliance, a charity aimed at stopping women's mortality in childbirth.
The supermodel is a global ambassador and French First Lady Carla Bruni is also involved in the organization.
The iconic Birkin bag -- which has an equally famous three-year waiting list -- retails (at the low-end) for about $6,000 and can rise exponentially when crafted out of exotic skins like Campbell's version.
From what we've seen in recent shots of Campbell, the purse is a Ficelle 25cm model with gold hardware. How much would you bid?
Naomi isn't the only celeb with a soft spot for the Birkin -- check out Victoria Beckham's many Hermès bags below. Imagine what she could get at auction for a few of those!
Victoria Beckham shops with her son and, of course, a gorgeous blue Birkin, large enough to hold plenty of toys and snacks. Hey, if she's going to drop that kind of cash on a handbag, it should at least be useful, right?
Victoria Beckham arrives at Heathrow Airport wearing a polka dot Mac coat and basic black bag. You know, if an Hermes handbag can be considered basic.
England football players' wives and girlfriends depart to Cologne for England's match against Sweden on June 20, 2006. Is she wearing shorts? A skirt? Who cares? She's got it covered with her fabulous bag.
Chris Uncle, FilmMagic
Victoria Beckham and youngest son Cruz leave their hotel in Paris. Posh's chic, layered look should fit right in with the city's style.
Victoria Beckham at the Farmer's Market on June 15, 2008. Because, you know, who doesn't take a ridiculously pricey designer bag to buy fresh cut flowers and veggies?
Victoria Beckham arrives to Heathrow airport dressed to impress. As always.
Victoria Beckham shops at Fred Segal in Santa Monice and then heads to the Sunset Marquis Hotel in West Hollywood, where she meets Katie Holmes and daughter Suri for dinner at the Bungalow. Just another day in the life of Posh, and, of course, another Birkin.
Victoria Beckham uses her bag to brighten up an otherwise neutral ensemble at the airport.
Victoria Beckham, rocking a black tipped french manicure, arrives at Los Angeles International Airport to fly back to England with Melanie Brown (Mel B) to work on a new Spice Girls single and a television commercial. No surprise here -- the bag is a perfect match for the dress, but we can probably guess which cost more.
Posh sports a bright, 1960's-style dress while toting a hot pink ostrich Hermes Birkin purse. Victoria is trailed by several assistants who carry her luggage, block photographers, and escort her through security. Ever wonder what Mrs. Beckham carries in that expensive luggage of hers? Now we know: More expensive handbags.