Brook was born and raised in Rochester, Kent, as Kelly Ann Parsons.
Maggie has two older half-siblings from her mother's previous marriage, and two older sisters.
With her supermodel looks, its no wonder she gets booked to travel all over the world.
But it was really tough.
She began taking gymnastics at the age of two.
I thought that donating to a charity like Headspace would be really ideal and practical, because online bullying and slutshaming, victim-blaming… it happens so often to so many young people,' she added.