'Anything Could Happen' singer Ellie looked sophisticated in black at the J Crew and Vogue magazine party on Tuesday night (16 September), where she showed off her cleavage in a daring backless halterneck top.
Giving her outfit a sexy edge, Ellie rocked a pair of skin-tight trousers and pointed boots. She also posed for pictures wearing a structured navy jacket.
Very chic, Ellie!
The 27-year-old popstar, who has been a regular at various LFW shows this past week, kept her hair loosely tied back in one and sported minimal make-up.
Also in attendance were models Suki Waterhouse and Cara Delevingne, as well as fashion designer Victoria Beckham, who was seen hanging out with fashion mogul Anna Wintour.
This isn't the first time Ellie has dared to bare, as on Sunday evening, she turned heads once more as she wore a see-through top while on a date with her McFly boyfriend Dougie Poynter.
What do you think of Ellie's outfit? Tell us below, as the best comment from across the website each week wins £50!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!