Model who's appeared in Teen Vogue and walked the runway for Topshop. She's best known for being Sylvester Stallone's daughter.
Her mother, Jennifer Flavin, is a former model and she helped Sistine start her modeling career.
She's become somewhat of a social media sensation, amassing over 1.6 million followers to her Instagram alone.
She has appeared with fellow IMG Model Camila Morrone in an advertisement for ZCD Montreal.