Residential Interior Decorator + Oakville + Burlington + Toronto Christine Da Costa, principle designer of Decor by Christine Interior Decorating & Designer likes to approach a room like a woman’s outfit: Buy great, timeless pieces that have longevity and accessorize with less expensive items! Make this your design motto and you will be successful. “I’ve always loved how Fashion intersects with Interior Decor, and frankly I cannot get enough of both. If you love the clothes in your closet then why shouldn’t that style or colour be reflected in your home? If you’ve got great style…so should your home — “Decorate as you dress” is her motto!