Miss World Philippines 2019, the 9th edition of the Miss World Philippines, was held at the Smart Araneta Coliseum in Quezon City, Metro Manila, Philippines on 15th September 2019 where Michelle Daniela Dee was crowned the new queen. She succeeds and was crowned Katarina Sonja Rodriguez Miss World Philippines 2018.

She represented the Philippines at the Miss World 2019 in London, England on 14th December 2019 and finished as a Top 12 semifinalist. During the preliminaries, Dee won both rounds of her group's Head to Head Challenge, earning her a spot in the Top 40 semifinalists. She also placed in the Top 40 of the Top Model competition, and Top 20 in Beauty with a Purpose.

Growing up with two of her siblings diagnosed with autism, Michelle has been an advocate for autism awareness and mental health education since she was sixteen years old. She has been working with the Center for Possibilities Incorporation, a foundation that helps and cares for children with special needs, and other organizations in spreading more information on autism, assisting those who have the developmental disability and creating more awareness about autism and mental health.