The reality TV star and jewellery designer, 23, looked stunning as she enjoyed an evening with friend and co-star Stephanie Pratt.
Lucy flaunted her toned tum in a black bra top, which she teamed with a lace-effect silver and gold skirt.
The creator of Creature Jewellery wore a biker-style jacket and black ankle boots to complete her super-chic look.
Meanwhile, Stephanie also wore leather in a TINY skirt, black tights and green fake fur gillet.
The close friends have been inseparable since meeting on the fly-on-the-wall series and spent the night at Italian bar and restaurant Toto's in London's posh Knightsbridge.
Before Lucy's Friday night out (14 November), she had announced some very exciting news to her fans.
Four of Made In Chelsea's biggest stars have joined forces for the E4 show's first official fitness DVD, MIC:FIT.
Lucy has joined ex-boyfriend Spencer Matthews and current on-off flame Oliver Proudlock (could have been awks) for the workout DVD, along with pal Alexandra 'Binky' Felstead.
The DVD includes four "dynamic routines" with the cast who are put through their paces by personal trainers.
And Proudlock flexes his rather impressive muscles when he creates his own yoga and pilates workout.
The DVD, which is released on December 1, promises to reveal the cast members' secrets to 'looking hot with a hectic lifestyle and how they keep fit when not partying in Chelsea'.
Sounds like one for the Christmas list! Are you listening Santa?
Would you consider buying the Made In Chelsea workout DVD? Tell us in the comment box below and you could win £50!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Watch Lucy, Proudlock, Spencer and Binky announce their fitness DVD in the video below: