This week’s red carpet

Actress Ahna O’Reilly wore a strapless Spring 2013 Monique Lhuillier dress in an ocean print to Elle’s 20th Annual Women In Hollywood Celebration at Four Seasons Hotel Los Angeles. (Jason Merritt / Getty Images for ELLE)

Oct. 31, 2013 4:42 PM PT

Host January Jones poses in a “Tuareg blue” macrame lace dress from the Chloe Spring 2014 collection at Chloe Los Angeles Fashion Show & Dinner in Los Angeles, California. (Jonathan Leibson / Getty Images for Vogue)

Actress Zoe Saldana looked cool as a cucumber in one of the collection’s stunning knotted, micropleat dresses in a similar shade at the Chloe Los Angeles Fashion Show & Dinner. (Jonathan Leibson / Getty Images for Vogue)

Actress Camilla Belle shows of her embroidered porcelain blue Oscar de la Renta dress at A Quest for Beauty: The Art Of Van Cleef & Arpels - Red Carpet at The Bowers Museum in Santa Ana, California. (Michael Buckner / Getty Images for Van Cleef amp Arp)

Who What Wear And Cadillac's 50 Most Fashionable Women Of 2013 Event

Actress Ahna O’Reilly smiles in a cobalt blue baroque print V-neck cocktail dress from the resort 2014 collection by Indian-American designer Bibhu Mohapatra at the Who What Wear And Cadillac’s 50 Most Fashionable Women Of 2013 Event at The London Hotel in West Hollywood, California. (Valerie Macon / Getty Images)

Actresses Lea Michele, left, and Lily Collins attend the 2013 CFDA/Vogue Fashion Fund event. Collins is wearing Altuzarra’s “Chika” boro-printed blouse and “Pagoda” white silk and cupro draped skirt from the spring/summer 2014 collection. (Jeff Vespa / WireImage)