Poppy Delevingne 's sister Cara will be very proud of her incredible Suicide Squad Halloween costume.

The younger sister of the model-turned-actress paid tribute to her sibling's upcoming comic book blockbuster with her outfit on Thursday night.

However, Poppy didn't go for Cara's Enchantress character for the detailed ensemble, instead embodying Margot Robbie's intense version of Harley Quinn.

Poppy Delevingne attends The Unicef UK Halloween Ball, raising vital funds to support Unicef's life-saving work for Syrian children in danger
Poppy's costume was spot on
Poppy Delevingne at the Unicef Halloween Ball 2015
A little tribute to Harley Quinn

Sporting blue and pink pigtails and a black hoody worn over a revealing leotard, the star looked the part as she arrived at the UNICEF Halloween Ball in London.

She made sure to pay attention to detail with the perfect costume, with the coloured eyeshadow, ripped tights and high-heeled boots completing the look.

It's no surprise to see Poppy paying tribute to Suicide Squad with her costume, with her sister Cara taking on the role of the Enchantress in the highly-anticipated movie.

Suicide Squad - First Official Image

She recently stunned on the front cover of Empire magazine as she showed off the raunchy and terrifying sides of her character .

Speaking in the publication's new issue - out Thursday - Cara said: "She's an ancient sorceress. A feral being. She's been trapped for so long and now she's finally let out."

The Enchantress takes over the body of June Moone, who is exploring a cave when she gets more "excitement" than she hoped for.

Cara added: "June is an adventure-seeker who's always wanted some excitement. And she gets what she wished for, in an terrible way."

Video Loading