"The 5th Wave" star's mother, Teri Moretz, shared a picture of herself with Brooklyn on Instagram along with the caption- "Me and this one... London cool! So happy to share our American political system with my favourite Brit!!."
Teri then posted a photo of Chloe and Brooklyn together, with a message- "These two! I love them both. What a night this is at the Democratic Convention!"
Brooklyn, 17, surprised his girlfriend by turning up to watch her speech at the DNC where the actress' mother joined him.