Congratulations are in order for Julia Restoin Roitfeld, the newest mother in the fashion industry.

Derek Blasberg tweeted that Julia gave birth to her child today but offered no details about the child's gender or name. "Congratulations to proud Momma @RestoinRJulia! (And thus, the chicest grannie ever: Carine Roitfeld!)" he wrote. "Can't wait to meet the beautiful baby!"

The new son or daughter will no doubt be beautiful: Julia once modeled for Lancome and recently posed for the Summer 2012 cover of i-D magazine. The baby's father is Swedish model Robert Konjic, who has been dating Julia for the past few years.

And while Julia's mother, Carine, is surely proud of the new addition to her family, she's already decided that she doesn't want to be called "grandmother." When her daughter announced that she was pregnant last November, Carine said, "I will be called 'Madame.'"

Update: Julia's publicist Katy Moseley revealed the gender and name of the new baby, Romy Nicole Konjic, to Vogue UK on Thursday. "We are delighted to confirm that Julia and Robert have had a healthy baby girl," Moseley said. "Both mother and daughter are doing very well and resting at home."

Photo: Julia Restoin Roitfeld photographed by Mario Sorrenti for the Summer 2012 issue of i-D magazine.

Kirstie Clements, who had been editor in chief of Vogue Australia for 10 years, was let go and replaced by Harper's Bazaar Australia editor Edwina McCann on Wednesday.

News reports called the staff change sudden and attributed it to an overall shift in the culture at Rupert Murdoch-owned NewsLifeMedia, which publishes Vogue and other magazines in Australia. Clements was one of three senior executives at the company let go recently. The firings came in the wake of Kim Williams's appointment as CEO of Australian media conglomerate News Limited, which runs NewsLifeMedia, last December.

McCann had been editor in chief of Harper's Bazaar Australia for three years but had worked at Vogue Australia previously. She starts her new job in July.

"I am very excited about returning to work for the world's most powerful fashion media brand," she said. "The opportunities for this formidable brand online and in a social media landscape are endless and our future is very bright indeed."

Nicole Kidman and her daughter Faith on the June 2012 cover of Harper's Bazaar Australia. Photo by Will Davidson.

Those stories and more in our daily news roundup.

• Jason Wu and Karlie Kloss will cocaptain a team for the annual New York AIDS Walk. The designer and the model, who attended the Met Gala together, will be joined by family and friends in an effort to raise money to fight the disease. "I'm so excited to be participating, and to be teaming up with Jason and all of our friends for such an incredible cause," Kloss said. [Modelinia]
  

• Some of Karl Lagerfeld's most memorable quotes have been turned into a t-shirt for the designer's eponymous line. English design agency I Love Dust formed quotes like "Sunglasses are like eyeshadow: They make everything look pretty and younger" into the shape of Lagerfeld's iconic face. [Refinery29]
  

• The veiled maroon beanie Stephen Jones designed for Raf Simons's second-to-last Jil Sander collection is now for sale on the Jil Sander website. The inventive topper goes for $440. [Racked]
  

• A new study conducted by model agent Ben Barry found that using very thin models in advertising can make women not want to shop. "Women will buy fashion when models convey a realistic, attainable image and make them feel confident," Barry wrote. [Fashion Etc.]
  

• Kelly Cutrone tweeted this week that one of her former assistants will be arrested for stealing from her public relations firm People's Revolution. Cutrone aimed this message at a private Twitter account. "@HussyChildPlz you better run cause you are going down CLOWN." [Styleite]

Carine Roitfeld will stage the Cannes Film Festival's first ever fashion show next week, and all the clothes coming down the runway will be black.

Roitfeld will present the show, which reflects her ideal all-black wardrobe, during the amfAR Cinema Against AIDS Gala on May 24. And after the models leave the runway, the entire collection will be auctioned off in a single lot. Fashion houses that have contributed looks to the show include Alexander Wang, Balenciaga, Roberto Cavalli, Chanel, Christian Dior, Christopher Kane, Emilio Pucci, Fendi, Giorgio Armani, Givenchy, Louis Vuitton, and Versace.

Roitfeld is currently being filmed for the documentary Mademoiselle C., which follows her as she creates the first issue of her new magazine, CR Fashion Book.

Photo: Carine Roitfeld wears Givenchy Haute Couture at the 2012 Met Gala.