Justin Theroux , 53, cozied up to Nicole Brydon Bloom at the star-studded premiere of Beetlejuice Beetlejuice in London on Thursday

At the event, Justin looked dapper in a pair of black trousers, a stylish blazer, and a white dress shirt underneath.

He slipped into a pair of sleek, black shoes and added a gold watch on his left wrist, which offered a flashy flare.

Nicole was effortlessly chic in a white minidress that contained one sleeve on the left side for a unique flare.

The Gilded Age actress donned a pair of open-toed, silver heels that were secured with thin straps that wrapped her ankles.

Her brunette locks were parted in the middle, and pulled back into a ponytail, preventing any loose strands from falling onto her face.

Bloom opted for minimal accessories to allow her outfit to be the main focal point, and added a pair of rhinestone earrings.

The TV star first flashed her large sparkling ring the day before at the 81st Venice International Film Festival as she glowed next to Justin at his film’s premiere

Justin and Nicole posed together for an assortment of snaps at the glitzy premiere at Cineworld Leicester Square.

The lovebirds held cheerful smiles on their faces and at one point, the beauty flashed an eye-catching, diamond ring on her left hand.

Though outlets like People have claimed the two are indeed engaged, the pair have yet to confirm it

The pair notably whisked themselves to the 81st Venice International Film Festival as Justin and other cast members promoted Beetlejuice Beetlejuice.

Theroux and Bloom were first romantically linked in February 2023

Justin was last married to Friends actress Jennifer Aniston from 2015 until 2017.

Justin was last married to Friends actress Jennifer Aniston from 2015 until 2017; seen in 2016 in Santa Monica

Along with the engagement milestone, Justin is preparing for the release of Tim Burton’s upcoming film, Beetlejuice Beetlejuice.

Justin is preparing for the release of Tim Burton’s upcoming film, Beetlejuice Beetlejuice

Other stars that were cast in the project – which is a sequel to the 1988 original – include Winona Ryder, Jenna Ortega, Michael Keaton, Catherine O’Hara, Willem Dafoe, and Monica Bellucci.