Oscars 2016: Best and worst red-carpet looks

Naomi Watts earned a spot on our best-dressed list thanks to her sapphire blue and bright purple Armani Prive gown, fully embroidered in stripes of Swarovski crystals, sequins and Lurex thread.

Julianne Moore’s choice of a black Chanel haute couture gown with tone-on-tone embellishments earned her a spot on the best-dressed list.

Among the best-dressed men was Jared Leto, who made the grade thanks to his custom Gucci evening suit with red contrast piping.

Michael Fassbender’s peak lapel Tom Ford placed him among the evening’s best-dressed men.

Brie Larson’s choice of a custom Gucci lapis blue silk organza gown made her our choice for a spot on the best-dressed list.

“Star Wars: The Force Awakens” actress Daisy Ridley in a silver Chanel Haute Couture gown makes our best-dressed list.

Cate Blanchett wears an Armani Privé sea-foam green, cap-sleeve mermaid gown that features hand-sewn clusters of Swarovski crystals and white feathers. On trend -- and on our best-dressed list.

Alicia Vikander (“The Danish Girl”) has been killing it in Louis Vuitton on this awards season’s red carpets, and this Oscars dress continued that trend.

Kerry Washington makes our best-dressed list thanks to this gladiator-appropriate custom Atelier Versace gown with a black leather bustier, white skirt and the fiercest thigh-high leg slit to hit the red carpet since Angelina Jolie’s meme-launching moment.

We like Rooney Mara and we like Givenchy. But this combination -- and the belly-button-baring diamond cutout -- is among our least favorite looks of the night.

The simple, straightforward strapless gown is usually a can’t-lose proposition for Reese Witherspoon. But here, the way the fabric sits at the bodice makes the dress look like a work in progress -- and makes it one of our least favorite looks of the night.

Pharrell William, seen with Helen Lasichanh, earned a spot on our worst-dressed list for his inexplicably rolled-up tuxedo trouser legs.

Sofia Vergara’s Marchesa dress was another busy-bodice mess (see also: Reese Witherspoon), that landed her on this year’s worst-dressed list.

From the front, Olivia Wilde’s dress from Valentino’s Spring 2016 Haute Couture collection was an awkward exercise in Oscar-level side boob. From the back it looked like she was wearing a folded dinner napkin. For this she lands on this year’s worst-dressed list.

Heidi Klum’s purple “bridesmaids gone bad” number looks like it’s 30 seconds from becoming a full-on wardrobe malfunction. For that she rounds out our worst-dressed list.