Wearing a hoodie with skinny jeans and a simple T-shirt, her character - Margo Roth Spiegelman - is certainly devoid of all the usual glamour we associate with the blonde beauty.
Having picked the lock, she then creeps upstairs and into the bedroom, where her victim is sleeping.
From there she shaves off the home-owner's right eyebrow, before the man wakes up and chases them out of the property.
Seen racing into a car, Delevingne's character should "Look at us - we're ninjas" before driving off and declaring that such an adrenaline rush is a sign of being truly alive.
The scene will surely whet appetites for fans of the model, who - funnily enough - is known for her own bushy eyebrows.
Adapted from the bestselling novel by author John Green (The Fault in Our Stars), Paper Towns is a coming-of-age story centering on Quentin and his enigmatic neighbour Margo, who loved mysteries so much she became one.
After taking him on an all-night adventure through their hometown, Margo suddenly disappears - leaving behind cryptic clues for Quentin to decipher.
The search leads Quentin and his quick-witted friends on an exhilarating adventure that is equal parts hilarious and moving. Ultimately, to track down Margo, Quentin must find a deeper understanding of true friendship - and true love.
Watch the full clip from Paper Towns here:
Directed by Jake Schreier, it will be released in New Zealand on July 16.