YouTube gaming star known for appearing on the collaborative channel Game Kids. She is most well known for the Sims Sisters series, played with her nanny Chelsea.
The Game Kids channel launched in December 2014, shortly preceded by the channel trailer the previous November.
One of Game Kids most popular videos is "Millie, Geoff, and Griffon play Minecraft - Kids Play", featuring her and her parents.
She is friends with family friend and Rooster Teeth host Gavin Free.