The former TOWIE star, who now runs a successful fitness website, went for all-out glamour in black wide legged trousers and a black halterneck with fringing.
She added sparkle to her look with a glittering gold clutch.
Lucy was at the Savoy Hotel to support Sunkissed tanning products, of which she is the celebrity ambassador… and it turned out to be a very good night as the brand won Best New Tanning product!
A thrilled Lucy shared a picture of herself to Twitter, showing her looking proud while holding the glass trophy. She added: "I am so proud to be brand ambassador."
She told us last year: "I love the sun, but you have to be really careful these days, mainly for the health benefits but also for the anti-ageing benefits. I do sunbathe but avoid sitting in the sun between 12pm and 3pm and I always wear at least an SPF 30. I cover up during the hottest hours.
"I'd much rather fake it than burn my skin."
Lucy Mecklenburgh - life after TOWIE: