31 Days of Holiday Party Dresses, Courtesy of the Stars - http://www.popsugar.com/

Emma Watson

Wearing a Christopher Kane dress, Paul Andrew shoes, Repossi ring, and gold K/ller Collectioncuff.

Jessica Alba

Wearing a red bodycon coordinate set and white tuxedo blazer.

Kendall Jenner

Wearing Ohne Titel, Gianvito Rossi pumps, and Jennifer Fisher jewels.

Olivia Palermo

Wearing a Tibi look, Hayward clutch, and BaubleBar x Olivia Palermo necklace.

Suki WaterhouseWearing Topshop Unique.

Selena GomezWearing an Elie Saab dress and Charlotte Olympia shoes.

Nicole Kidman

Wearing Proenza Schouler.

Kate BeckinsaleWearing Sass & Bide.

Kate Hudson

Wearing Michael Kors.

Kate Middleton

Wearing a Dolce & Gabbana dress and Anya Hindmarch clutch.

Kerry Washington

Wearing a Spring '16 Boss dress.

Lupita Nyong'o

Wearing a Christian Dior dress and Aquazzura heels.

Victoria Beckham

Wearing a black suit and black T-shirt.

Kirsten Dunst

Wearing Gucci.

Queen Letizia

Wearing a Felipe Varela tuxedo dress, Inés Figaredo, Tous earrings, and Magrit Mila pumps.

Kate Bosworth

Wearing an Erdem dress, Tabitha Simmons shoes, Christian Louboutin clutch, and jewels byBoucheron and Noa Fine Jewellery.

Naomi Harris

Wearing Alexander McQueen.