Hollywood's hautist mamas were in full fashion force Wednesday, stepping out across the world in superior style! Julianne Moore hit her NYC premiere of The Kids Are All Right, rocking a custom-made Erdem gown, which featured a black and white, goth-like floral pattern from the Spring 2010 collection. Earlier in the day, the mother of two hit The Late Show with David Letterman, jazzing up a black asymmetrical dress with multi-colored Jonathan Kelsey gladiator heels, which were absolutely to die for!

PHOTOS: Yaya DaCosta, Mia Wasikowska, Julianne Moore, Freida Pinto, Nicole Richie, Kim Kardashian, Kelis, Jessica Alba, Elizabeth Hurley, Elle MacPherson, Dolly Parton, Jennifer Morrison, Eva Longoria Parker, Juliette Lewis, Ellen Barkin, Heidi Klum, Lucy Liu, Corbin Bleu, Kathy Griffin, Katy Perry And Jackson Rathbone In The Best And Worst

Also at the swanky premiere, was the impossibly gorgeous Ellen Barkin. Though the blonde seems to get more bombshell with age, her 1950's inspired ensemble was a bit too Stepford Wives for our taste!

PHOTOS: More Best And Worst

Supermodel moms Heidi Klum and Elizabeth Hurley both scored style highs. While Elizabeth added a blast of bright color to the Elephant Parade in London with a hot pink, orange and lime green gown, Heidi looked super sexy, pairing a blouse and high-waisted asymmetrical skirt with Christian Louboutin platforms for Live with Regis and Kelly in NYC.

What childless, loud-mouthed comedian looked like she was ready for a day at the senior citizens center, wearing a striped muumuu style dress to her book signing?  Check out the gallery in Style to find out.