Emma Stone's Red Carpet Style

The Battle of the Sexes star looked radiant in a white floral Louis Vuitton dress with cut-out shoulders at the BFI London Film Festival.

Stone went for drama in a black Givenchy halter jumpsuit covered in bows at the London Film Festival premiere of Killing of a Sacred Deer.

The platinum-blonde starlet wore a white Tom Ford sheath dress to the Toronto International Film Festival premiere of Battle of the Sexes.

The Oscar winner's custom Givenchy gown for the Academy Awards took a whopping 1,700 hours to create.

Stone wore an embellished custom Chanel dress with matching trousers underneath for the BAFTAs.

Stone attended the SAG Awards in a half-sheer black floral Alexander McQueen number.

Stone turned heads in a sultry ruby red slip dress and matching lip at a London screening of La La Land.

The actress wore a dreamy star-covered Valentino gown with a plunging neckline at the Golden Globes.

Stone bared her midriff in a halter-style Roland Mouret gown at the 2016 Critics' Choice Awards.

The actress stunned in a lace Rodarte number with heart detailing on the chest at the Mill Valley Film Festival premiere of her equally romantic movie, La La Land.

Stone got flirty in a yellow Chanel mini paired with pointy ankle-strap pumps at the L.A. premiere of her much-anticipated film La La Land. She left her red hair down, styling her lob in loose waves.

The redhead stunned at the Venice Film Festival premiere of her new film, La La Land, in a glittery, silver-fringed, custom Atelier Versace gown and matching strappy sandals.

Stone paired her new brunette strands with a plunging white Prada gown and lace-up corset which perfectly matched the Met Gala's theme of "Fashion in an Age of Technology."

"If anyone could pull off wearing pants to the Golden Globes, it's Emma," says her stylist Petra Flannery, who considers this custom Lanvin jumpsuit a risk that paid off. "Everything from the hand-beaded bodice to the taffeta bow sash was perfect." 

Stone attended the Academy Awards wearing a beaded cartreuse, long-sleeved gown from Elie Saab. 

At the SAG Awards, Stone combined her silk chiffon Dior Haute Couture dress with a tuxedo jacket, a cherry pout (Revlon Ultra HD's Gladiolus shade), and diamond ear cuffs by Repossi. 

For the 2015 Vanity Fair party in Beverly Hills, Stone wore a shimmering red gown from Altuzarra with a plunging neckline and dropped-waist silhouette. 

The actress attended the Saturday Night Live 40th Anniversary Celebration in New York City wearing a sparking Christian Dior gown paired with black Christian Louboutin heels.

The actress attended the premiere of Irrational Man during the Cannes Film Festival wearing a pale blue, open-backed lace gown. 

Stone attended a photocall for Irrational Man during the Cannes Film Festival wearing a black lace dress with a skirt made of frothy organza ruffles from Oscar de la Renta's pre-fall 2015 collection. 

When Stone first laid eyes on this Atelier Versace gown, she had an "aha!" fashion moment. "Emma had never really worn yellow before, and she was in love with this," says Flannery. The $23,000 emerald and gold David Webb necklace was a last-minute addition. "Emma doesn't like to drown herself in diamonds."

A sophisticated tulle Valentino Haute Couture gown was ideal for the Venice Film Festival, especially on a night when Stone's buzzy performance in Birdman and her freshly cut bob guaranteed headlines. 

"This is sporty and young, but there's an elegance to it," says Thakoon designer Thakoon Panichgul. "Emma looked spectacular."

To ensure a flawless fit on this creamy Prada creation piped with silk and onyx paillettes, the brand's design team tweaked the dress on Stone in both L.A. and Rome just days before she actually wore it to the N.Y.C. première of The Amazing Spider-Man 2.

"The neckline and hem on this Lanvin dress are a little off-kilter," says Flannery, "so we emphasized the asymmetrical style by tying the grosgrain ribbon on her shoes crooked."

"We often do something different when we go abroad," says Flannery of the Arizona native's silk Gucci number at the Berlin première of The Croods. "This has a '60s vibe." 

"This Chanel look with gorgeous floral appliqués is soft, but the spiked Christian Louboutin pumps give it a little edge," says her stylist.

The star first grabbed the attention of the fashion world in this Calvin Klein Collection column gown. Says creative director Francisco Costa, "The bright nectar color matched her vibrant personality."