She wowed the audience on The Masked Singer US last week.
The singer, 43, looked typically chic in the 70s-inspired co-ord for their meal at Craig's in West Hollywood - her outfit boasting fringe tassels and cut outs along her midriff.
Lilac dreams: Nicole Scherzinger went braless under a plunging 70s-inspired lilac suit as she headed out for a romantic date at Craig's with boyfriend Thom Evans on Monday
The star stepped out in the flattering fit and flare trousers, which offered a peak of her nude heeled sandals thanks to the split at the bottom.
Although her ensemble oozed retro flair, Nicole decided to channel the 1920s with her flat pin curls hairstyle - adding a sweep of pink lip stain to her pout.
Meanwhile, her hunky boyfriend Thom, 36, commanded attention with his eye-catching reflective jacket, pairing it with a more pared-down pastel green T-shirt.
Retro vibes: The singer, 43, looked