Cara Delevingne's eyebrows are famously on fleek, but during an appearance on BBC's The Graham Norton Show, the model-turned-Paper-Towns-actress found herself face-to-face with a couple of challengers in a hilarious eyebrow-off with fellow brow-blazing thespians, Emilia Clarke and Jake Gyllenhaal. "Eyebrows. Cara Delevinge, they're your signature thing," Norton explains to open the competition, and Delevinge is happy to agree, charmingly crediting them for her success: "Yeah, they're the ones who do all the work. I just sit, and wait for them to do things" "Mild bullying at school, totally worth it," Emilia Clarke jokes of her beautifully prominent brows, noting that she has never plucked thanks to years of her mother emphatically saying "don't touch them!" Gyllenhaal, on the other hand, says he only grew into his eyebrows over time, and told the roaring audience that pictures of him at the age of 11 years old were really "just eyebrows." Clarke's Terminator Genisys co-star Arnold Schwarzenegger stopped by to judge the competition (on "precision movement, rhythm, and definition"), and while we won't spoil the final result, we will give you a quick clue: "I'm not saying anything, but we are in a movie together... I'm just gonna put that one out there," was Clarke's closing argument.