Macaulay Culkin's younger brother enjoys date night months after becoming a dad

Rory Culkin and girlfriend Katelin Arizmendi made a stylish pair as they held hands on the red carpet, almost five months after welcoming their first baby.

Macaulay Culkin's younger brother joined the cinematographer at the premiere of Apple's Nocturne at Regal Union Square in New York on Tuesday, October 20.

The couple coordinated in black for the occasion, posing side by side and smiling for photographers. Katelin added a bright finishing touch with a glossy red clutch and matching manicure, keeping hold of Rory's hand as they faced the cameras.

Their evening out comes after the arrival of daughter Havoc Moon Alva Culkin on May 23, with Katelin sharing affectionate glimpses of their first days as parents on Instagram. 

Rory Culkin and Katelin Arizmendi coordinate at Nocturne premiere

Katelin wore a strapless black dress with a voluminous silhouette, textured floral detailing and a gathered hem. Pointed black ankle boots completed the look, while her shoulder-length blonde hair fell in loose waves around her face.

Her red clutch brought a splash of color to the otherwise dark ensemble, complemented by a warm red lip.

Rory, meanwhile, wore a black button-up shirt with oversized chest pockets and wide-leg pants, finishing his outfit with chunky black shoes. Contrasting brown fabric panels at his waist added an unexpected detail, while his shoulder-length brown hair was worn in loose curls.

The actor also posed alone, slipping his hands into his pockets against the show's gray backdrop.

Nocturne premieres on Apple TV on October 30. Rory appears alongside Liev Schreiber, Zazie Beetz and Stephen Graham in the crime thriller, which follows a homicide detective whose hopes for a quieter life are disrupted by a dangerous serial killer. 

Katelin Arizmendi called Rory Culkin the "best papa"

Away from the red carpet, Katelin has offered a tender glimpse of Rory's new role as a father.

Following their daughter's arrival, she shared photographs of him enjoying skin-to-skin contact with their newborn, describing him as the "best papa."

The cinematographer also posted pictures of Havoc wrapped in hospital blankets, including one showing the little girl looking wide-eyed shortly after her birth.

Announcing the arrival on Instagram Stories, Katelin wrote: "We're so in love with you." She later revealed their daughter's full name by updating her earlier pregnancy announcement. 

Rory Culkin and Katelin Arizmendi's growing family

The couple, who began dating in 2023, have previously stepped out together for film events, including The Crow premiere in August 2024 and The Age of Disclosure premiere in November 2025.

Their daughter joins a family already familiar with balancing acting and parenthood: Rory's older brothers Macaulay and Kieran both have children of their own.

For Katelin, her early message about Havoc captured just how quickly their daughter had become the center of their world: "We love her. She rules us already."