The singer, 45, cut a chic figure in a mauve velvet blazer and matching trousers as she departed the swanky venue.
Adding height to her frame with a pair of black heels, the former Pussycat Doll also wore a beige top.
Styling her brunette locks into a ponytail, Nicole completed her look for the evening with a black handbag.
Thom looked dapper in a tan leather jacket which he wore with a white T-shirt and black slim-fitting jeans.
Radiant: Nicole Scherzinger looked incredible as she enjoyed a night out with her fiancé Thom Evans at the Chiltern Firehouse in London on Tuesday
Smart: Thom looked dapper in a tan leather jacket which he wore with a white T-shirt and black slim-fitting jeans
Outfit: The singer, 45, cut a chic figure in a mauve velvet blazer and matching trousers as she departed the swanky venue
Also out for the evening were Made In Chelsea star Ollie Locke-Locke and his husband Gareth.
Ollie wrapped up for the evening in a black jacket which he wore with a white top and blue jeans.
Gareth opted for a tan jacket which he wore over a black Top and dark grey skinny jeans.
The outing comes after Nicole broke down in tears as she was awarded Best Musical Performance at the Evening Standard Theatre Awards on Sunday night.
The star couldn’t control her emotions as she took to the stage at London’s swanky Claridge’s Hotel to accept the honour for her showstopping turn in West End Musical Sunset Boulevard.
She had been up against A Strange Loop’s Kyle Ramar Freeman, Crazy For You’s Charlie Stemp and Guys & Dolls’ Marisha Wallace for the award.
Composer Andrew Lloyd Webber was not able to attend the awards in person but said that his leading lady had ‘given us a performance for the ages.’
Nicole then welled up as she revealed that her role as Norma Desmond in the atmospheric musical had helped her ‘be accepted by London’s theatre community.’
Style: Styling her brunette locks into a ponytail, Nicole completed her look for the evening with a black handbag
Night out: Also out for the evening was Gareth Locke-Locke (pictured) and his husband Ollie
Glamour: Nicole accentuated her natural beauty with a light palette of makeup
The Grammy-nominated singer looked nothing short of sensational at the awards in a black sequinned gown with lace overlay that hugged every inch of her figure.
The plunging frock teased a glimpse of her ample cleavage as she graced the red carpet ahead of the swanky ceremony.
Nicole’s new role marked her return to the stage, eight years after she was nominated for an Olivier Award for her portrayal of Grizabella in Cats.
Her musical comeback was heralded a success by Daily Mail reviewer Luke Jones who gave her a five star review.
It said: ‘The classically romantic score remains, melting over a slightly clunky plot about a reclusive, deluded silent movie star who ensnares a young writer called Joe, so he can polish her comeback screenplay. Over the course of two-and-a-half hours she loses her marbles, and he loses his life.
Casual: Ollie wrapped up for the evening in a black jacket which he wore with a white top and blue jeans
Pals: Nicole bid farewell to Gareth with a warm hug as they left the venue
‘Director Jamie Lloyd, who’s been toiling at his stripped-back and moody style of revival for years, has finally hit the sweet spot. No lavish costumes, no intricate set. Just live camera work, a ferociously big star, and an even bigger band.
‘The lighting is almost exclusively bright white, which designer Jack Knowles harnesses in the most magical way. It pulsates, hides and reveals, using the thick stage mist.
‘Dominating the view, though, is an enormous screen, giving us haunting, live close-up shots of the actors in front of us… melodramatic glances, fluttering lashes and big bulbous tears. Scherzinger even delivers a pouty over-the-shoulder look right down the barrel.
‘It’s a perfect marriage of psychological trauma and camp. Think Pinter, with a bouncy brass section and expressive dance. Or opera, if it were watchable. Norma’s dramatics are put in what feels like a real world.’