Attending the launch for clothing site LittleBlackDress.co.uk, Lucy aptly chose to wear her fave from the collection and she looks fabulous in the slinky number!
Modelling the 'Gemma' dress, Lucy flaunted her figure in the tight fitting LBD, featuring a sexy open back and cowl-dropped neck.
The 23-year-old teamed her outfit with a fun-loving pair of metallic blue, double strapped barely-there sandals and toted her evening essentials in a cute aztec clutch.
On the beauty front, Lucy opted to keep her make-up looking natural, sporting fluttery lashes and glossed up lips. For her hair, she pinned her chestnut locks back from her face in a loose up-do.
And clearly a fan of her styled tresses, Lucy posted a close up of herself to Instagram along with the caption: "Sweet hair today @mvanclarke."
Lucy's outing comes after she revealed earlier this week that her sister, Tiffany Watson, will be joining her on Made In Chelsea this series.
Tiffany joins her big sister and the rest of the cast as well as two other newbies, Lonan O'Herlihy and Will Colebrook, for the eighth series of the show .
The new boys are both friends of Alex Mytton from his time at university.
The new MIC series sees the gang back in London after spending their summer in New York and we can't wait to see what they've all been getting up to!
Made In Chelsea returns to our screens next Monday (13 October) on E4.
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!