Sydney Sweeney has been making a significant sartorial impact during the press tour for her new psychological thriller, "Echo Valley." The actor has embarked on a fashion marathon, showcasing a versatile range of styles, from ethereal gowns fit for a Disney princess to sharply tailored suits and edgy ensembles, often wearing several distinct looks per day.

In "Echo Valley," Sweeney plays Claire Garrett, the emotionally troubled daughter of Julianne Moore’s character, Kate Garrett. The film, helmed by Michael Pearce, centers on Kate, who trains horses on her farm in southern Pennsylvania while coping with personal tragedy. The plot is set in motion when Claire arrives at the farmhouse covered in blood that isn't hers, initiating a chain of dangerous events. "Echo Valley" was released in select US and Canadian theaters on June 6 and is set for release on Apple TV+ on June 13.

Sweeney's press tour wardrobe has demonstrated a deliberate balance, often following a "suit-to-gown formula." For the London premiere of "Echo Valley," she graced the red carpet in a bespoke Miu Miu gown. The robin egg blue dress, described as ethereal and princess-like, featured a sculpted bodice with a delicate keyhole cut-out at the bust, halter-style straps, elegant off-the-shoulder sleeves, and a long, flowing, pleated train. This look, providing a sensual flash of flesh through a "boob window," was complemented by dazzling David Morris diamond jewelry, including dangling earrings, statement rings, and a stack of bangles. Her beauty look was soft, with luminous skin, glossy lips, and brushed-out curls. Earlier that day in London, she had turned heads in a sharply tailored suit, and upon arrival in the British capital, she sported a low-cut pinstripe pantsuit layered casually with a white tank.

The New York leg of the tour saw Sweeney in equally show-stopping attire. For the New York premiere, she chose a custom red Vera Wang ballgown. Crafted from Italian silk and featherweight faille, the gown featured a strapless corseted bodice, a structured crumb-catcher neckline, a fitted bodice highlighting her waist, and a ruffled peplum detail atop a voluminous ballgown skirt. This dramatic red, potentially an intentional nod to her character's blood-soaked appearance in the film, was accessorized with Kwiat diamond stud earrings. She later attended the post-premiere party in a crimson Vivienne Westwood dress. Her off-duty style in New York emphasized vintage suiting, including an archival Jean Paul Gaultier pinstripe blazer worn sans pants and a demure Givenchy skirt set by John Galliano from the 1996 Haute Couture collection.

During her appearance at "The Tonight Show Starring Jimmy Fallon," Sweeney exuded retro-chic charm in the aforementioned gray Givenchy skirt suit by John Galliano. This archival piece featured a cropped jacket with padded shoulders and a stand-up collar, and a high-waisted skirt with bow adornments and flap pockets. She modernized the Old Hollywood-style suit with sleek black rectangular sunglasses, a tiny black bag, and black suede Gianvito Rossi pumps.

For "The Kelly Clarkson Show," Sweeney presented two distinct looks. One was a sleek and modern white Mugler shorts suit. The ensemble, featuring a perfectly tailored blazer with a nipped-in waist, plunging neckline, padded shoulders, and a flared hip detail, was paired with chic white short shorts. Accessories included sleek black sunglasses, Anita Ko’s “Sienna” Diamond Huggies, a contrasting black bag, and black suede Jimmy Choo “Romy” pumps. The Jimmy Choo Romy, launched in 2016, is known for its classic Hollywood glamour, refined silhouette, and timeless appeal, making it a favorite among A-listers and royals. These pumps, with their pointed toes and 4-inch stiletto heels, elongated Sweeney’s 5ft 3¼ frame.

Arriving at "The Kelly Clarkson Show" on another occasion, Sweeney channeled an edgier vibe in head-to-toe Alexander McQueen. She wore a pale yellow pleated chiffon top made from organic silk threads, featuring a high collar, puffed cap sleeves with lace trims, an internal corset, and a sheer peplum detail at the back, priced at $3,500. This delicate top was juxtaposed with an Alexander McQueen Spring 2025 leather mini skirt, priced at $3,450, which had an antiqued finish fading from black to tan. The look was cinched with a large belt with silver-tone hardware and accessorized with $510 Alexander McQueen Side T-Bar geometrical sunglasses, a structured black “Mini Birdee” bag (available for $1,500 at Harrods), and Alexander McQueen “Francisco” pumps. These pointed-toe mule pumps featured a wide strap across the foot with a large silver-tone buckle, embodying the house's punk aesthetic.

For an appearance on "Good Morning America," Sweeney opted for a nautical-inspired ensemble from Coperni’s Fall 2025 collection. She wore a form-fitting black vest with a striped sailor collar and black buttons, paired with a white pleated mini skirt with layers of ruffles. Her accessories included black Alexander McQueen sunglasses, a Miu Miu “Arcadie” leather bag, and striking Larroude “Christy” knee-high boots. These black boots, handmade in Brazil from stretch vegan leather, featured a sleek silhouette with pointed toes and 3.8-inch block heels.

Leaving the GMA studios, Sweeney showcased her legs in an archival Jean Paul Gaultier pinstripe blazer dress from the French designer’s Fall 2005 collection. The brown menswear blazer featured classic tailoring and was worn pantless, complemented by a matching pinstripe necktie. She completed this look with sleek sunglasses, a chic brown suede “Apolonia” bag from Magda Butrym, and brown pointed-toe slingback pumps.

Sweeney's footwear choices have consistently been a key element of her press tour style, often selected to elongate her frame and complete her look. Beyond her preference for Jimmy Choo's "Romy" heels, her versatile shoe game has included Staud “Cami” over-the-knee boots in cream mink suede during SNL rehearsals, edgy pointed-toe black leather boots with silver stiletto heels, towering black platform patent-leather sandals under a Giorgio Armani gown, and black silky platform heels with a peep-toe design for Paris Fashion Week. Her US size 7 feet have slipped into a variety of statement-making styles, underscoring her meticulous approach to fashion.

Throughout the "Echo Valley" press tour, Sydney Sweeney has solidified her status as a style chameleon, effortlessly navigating diverse aesthetics while consistently delivering memorable and impactful fashion moments that keep her in the spotlight.