Brianne Tju: Brianne Tju. Actress: I Know What You Did Last Summer. Brianne Tju's an actress. She was born on June 14, 1998 in Los Angeles, California. She's of Chinese & Indonesian descent. She's known as Riley Marra in Scream: The TV Series (2015), Alex Portnoy in Light as a Feather (2018), Alexa in 47 Meters Down: Uncaged (2019) & Margot in I Know What You Did Last Summer (2021). She graduated...
