Jennifer stole the show in Roberto Cavalli at the LA premiere of her new movie, Office Christmas Party.
Allison Williams wore a shining silver Diane Von Furstenberg dress to the Voices of Solidarity Awards in New York.
Chrissy looked chic in a white jumpsuit by Italian designer Mario Dice at a Target Event in New York.
The actress attended Coach’s 75th Anniversary Fashion Show in New York wearing a complete look by the label.
Emmy Rossum wore a checked Carolina Herrera gown to an event honouring the designer in New York.
Emma Stone wore a blue, embellished Prada dress to the La La Land Los Angeles premiere.
Emma Roberts sat front row at the Coach 75th Anniversary Fashion Show in New York.
Felicity Jones looked regal in Dior at the Hollywood premiere of Rogue One: A Star Wars Story.
Katie Holmes wore an embellished Zac Posen dress at an All We Had screening in New York.
Hailee boldly rocked sequins and lace in this Rasario dress at the Jingle Ball in New York.
Olivia Munn wore this stunning, tiered Jonathan Simkhai dress on the Office Christmas Party red carpet.
Sienna Miller went to a photocall for Live by Night in this printed Proenza Schouler dress.
Kelly Rowland rocked the red carpet in a red dress by Helorocha at the GQ Men of the Year party in LA.
Lea Michele looked ladylike in a floral J. Mendel dress at the Hollywood Reporter’s Women in Entertainment Breakfast.
For the latest in fashion, beauty and culture, sign up to receive ELLE's bi-weekly newsletter