Uma Thurman

Uma Thurman wore a bikini yesterday for her latest day in the sun. She's off on vacation in St. Barts, and has been photographed enjoying herself out on swims during the past week. Her son, Levon Hawke, and mother Nena von Schlebrugge went along on the Caribbean getaway.

Forty-one-year-old Uma is currently expecting her third child. It will be her first, though, with long-term partner Arpad Busson, a London-based financier. Uma is already mother to 10-year-old Levon and 13-year-old Maya with ex-husband Ethan Hawke. Arpad has two sons of his own with ex Elle Macpherson, 14-year-old Arpad Flynn and 9-year-old Aurelius Cy.

Pregnant Uma Thurman showed off her baby bump in a striped two-piece suit yesterday. The actress took a dip in the waters off the coast of St. Barts with her two kids Maya and Levon Hawke. Uma and the kids joked around on deck, and later the expecting star worked out her legs with some yoga stretches.

Uma's joins the growing list of expecting celebrities like Jessica Simpson, Maggie Gyllenhaal and reportedly pregnant Reese Witherspoon. In addition to adding to her family, Uma is also wrapping up a five-episode arc on the small screen in NBC's Broadway drama, Smash.

>> From London to Sydney to Miami, this week's best-dressed is a colorful bunch. See who's wearing what — and where — in the slideshow.

Sarah Jessica Parker seemed to take the snow theme to heart last night when she attended UNICEF's Snowflake ball in a pouffy Louis Vuitton number. She attended the gala at Cipriani 42nd Street with other stars like Zoe Kravitz, Uma Thurman, Adrien Brody, and Mark Ruffalo. Zoe made the rounds inside while decked out in a Chanel ensemble that had feathery details just like SJP's.

Sarah Jessica and her family are home in the Big Apple again after spending Thanksgiving with Matthew's sister in New Jersey. SJP and Matthew attended a mass at Morristown's St. Peter's Episcopal Church, where his sister is a pastor. Their son, James Wilkie, had a lesson on the organ, then over 20 members of their extended family sat down to enjoy a 27-pound turkey!

>> In honor of their upcoming Versace For H&M collaboration — in stores and online Nov. 17 — the two brands pulled together three events in one last night at New York's Pier 57. Through a gilded hall of mirrors, designers (Anna Sui, Joseph Altuzarra, Christopher Kane), supermodels (Linda Evangelista, Helena Christensen), and other such notables (Uma Thurman, Chloe Moretz, Nicki Minaj, Prince) were swept into a dark room framing a serpentine catwalk, on which Versace favorites like Abbey Lee Kershaw, Natasha Poly, Lindsey Wixson, and Daphne Groeneveld wore black leather headscarves, heavy kohl, and stomped to speaker-pumping music.

Cue the next: After her runway bow, Donatella Versace gestured guests to follow her into a green-lit, disco ball-hung room covered in oversized palm tree wallpaper. Minaj took the mic — dressed in Versace for H&M, of course — and inspired Alexander Wang to sing along in the audience to every song. Much to Donatella's pleasure — and Natasha Poly's, who sat on the shoulders of a friend so she could videotape the set on her phone — Prince was up next on stage. Versace fist-pumped when Prince gave her a shout-out, clapped above her head . . . and that was before his encore of "Purple Rain."

Finally, the last of the three-prong event: crowds that had been lining up before Prince even took the stage were unleashed into the shopping area. As Style.com notes, "Many of the women in the crowd made beelines for the collection's men's clothes."

A video of the show, below.

Kate Moss was back on the runway this morning to walk in the Spring 2012 Louis Vuitton show. She also took to the catwalk for her longtime friend Marc Jacobs last season when she memorably strutted her stuff while smoking a cigarette. Many famous faces were on hand to see Kate's latest turn and Marc's new designs. Nicole Richie and Joel Madden popped over to France after spending a weekend in London. Rachel Zoe, Anna Wintour, Uma Thurman, Alexa Chung, and Olivia Wilde were also there. Nicole was evidently impressed to see iconic Kate in the flesh. She tweeted, "Watching Kate Moss close the Louis Vuitton show just killed me." Kate's relationship with Marc and Louis Vuitton was cemented when she inked a deal with their parent company LVMH's Fred jewelry brand. In fact, Kate held a reception for friends at the Ritz hotel last night to celebrate the launch of her new necklaces, rings, and bracelets. Her husband, Jamie Hince, wasn't able to attend, but Kate held court with other pals like Christian Louboutin, Lou Doillon, and Gareth Pugh.

Ashton Kutcher and Demi Moore teamed up with Sarah Jessica Parker for the first-ever Urban Zen Stephan Weiss Apple awards at Donna Karan's Urban Zen foundation in NYC last night. The ceremony was named in honor of Karan's late husband, Stephan Weiss, who passed away after a battle with cancer in 2001. Bill Clinton was there to pick up the inaugural Apple award while education activist Courtney Ross and Dr. Oz received other honors. The crowd included stars from music, fashion, and drama, including Keith Richards, Wyclef Jean, and Anna Wintour. A Valentino-clad Uma Thurman stepped out as well along with Michael Douglas. Michael spoke about his wife Catherine Zeta-Jones's recent health issues, saying, "She's great! She's down in Miami doing Rock of Ages, the musical. So she's doing great. She's doing a great job." Sarah Jessica's own partner, Matthew Broderick, was also away attending Morgan Freeman's AFI Tribute in LA.

Ryan Gosling popped up at his first Cannes event this evening looking dapper in Salvatore Ferragamo for the Cinema For Peace inaugural dinner honoring Sean Penn for his charitable efforts in Haiti. Leonardo DiCaprio and rumored flame Blake Lively took a break from lounging so he could stop by to say a few words while Robert De Niro, Naomi Campbell, and Uma Thurman sat in the audience. Ryan's arrival in France is later than most of the star-studded crowd as his upcoming flick Drive, costarring Carey Mulligan, is closing out the film festival. Carey debuted newly dyed brown hair this week in preparation for her next role starring opposite Leonardo in The Great Gatsby. The cast of the Baz Luhrmann remake of the classic is close to complete with Joel Edgerton now playing Tom Buchanan after Ben Affleck reportedly passed on the role last month. Carey's not the only link between Leo and Ryan, as Ryan was also momentarily romantically tied to Blake last Fall.