Cosmo is a loving sister to Sophie and also designs some of her clothes and also almost all of the brand's cylume coord including Lala and Mireille's. She takes care of Sophie so much! And also super kind! It's like she doesn't even know how to get angry. She has a a great ( absolutely the best! ) fashion sense! Also she designs Sophie's clothes when going out except for the training pants and jacket. Cosmo stands as Sophie's mom.