Sydney Sweeney is painting the town red ahead of the holidays.

The actress, 28, stepped out in two monochromatic looks in New York City on Monday while promoting her upcoming psychological thriller “The Housemaid.”

Sweeney kicked off her ruby-hued day at a taping of “The Tonight Show Starring Jimmy Fallon,” where she slipped into a cranberry-colored satin midi dress by Australian designer Alex Perry. The body-skimming number featured long sleeves, a bateau neckline, and a sash draped across her hips.

Sydney Sweeney turned heads in a vibrant red custom Patou ensemble for dinner at The Corner Store in Soho on Dec. 1. GC Images

Earlier that evening, she slipped into a cranberry satin crêpe midi dress by Alex Perry for her appearance on “The Tonight Show Starring Jimmy Fallon.” Todd Owyoung/NBC via Getty Images

The back-to-back monochrome moments came as the actress promotes “The Housemaid,” which hits theaters Dec. 19. Todd Owyoung/NBC via Getty Images

She paired the burgundy design with matching red pumps and bundled up against December’s chill in a vintage D&G coat.

Later that evening, the “White Lotus” alum, who works with celebrity stylist Molly Dickson, emerged in Soho wearing a fire-engine red ensemble for dinner at The Corner Store.

This time, she went for a festive custom Patou look: a vibrant red cropped jacket with a shoulder-grazing collar paired with a bubble-hem miniskirt. She styled the coordinated set with knee-high Magda Butrym boots and black sunglasses.

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Sweeney completed her Patou look with knee-high Magda Butrym boots in matching scarlet suede. ASPN / BACKGRID

The actress debuted a sleek blowout for the press day, courtesy of hairstylist Glen Coco. GC Images

The “White Lotus” alum bundled up against the December chill in an archival D&G fur-trimmed coat. GC Images

Sweeney’s hairstylist, Glen Coco, gave the actress a sleek blowout, switching up her blond bob from the Old Hollywood waves she’s favored recently.

The back-to-back monochrome moments come as Sweeney ramps up press for “The Housemaid,” which hits theaters Dec. 19.

In the film — based on Freida McFadden’s 2022 bestselling novel — she stars as Millie, an ex-convict who lands a job as a live-in maid for a wealthy couple played by Amanda Seyfried and Brandon Sklenar, only to discover their seemingly perfect life hides dark secrets.

In “The Housemaid,” Sweeney stars opposite Amanda Seyfried and Brandon Sklenar, playing an ex-convict who becomes a live-in maid for a wealthy couple. Instagam/sydneysweeney

During her “Tonight Show” appearance, Sweeney discussed the upcoming third season of “Euphoria” and revealed her character’s storyline will focus on “self-discovery.”

The Paul Feig-directed thriller also adds another producing credit to Sweeney’s resume. She serves as an executive producer alongside Seyfried and author McFadden.

For her “Tonight Show” appearance, Sweeney chatted with Fallon about the upcoming third season of “Euphoria,” teasing that her character’s storyline will focus on “self-discovery.”

She also participated in a game of “What’s Behind Me?” and shared details about her recent “Shreksgiving” celebration with friends.