After winning the 2008 Trinidad and Tobago World pageant, Walcott was a runner-up in the 2008 Miss World pageant and the winner of the 2011 Miss Trinidad and Tobago Universe competition.
After attending The University of the West Indies' extension program, she studied acting at New York City's HB Studios.
Notable for her charitable work, she became a spokesperson for the Just Because Foundation.
She and her sisters Sophie and Heidi and brother Joshua grew up in Port of Spain, Trinidad and Tobago. In 2013, she married competitive boater Lee Pollonais.
She was featured in Robin Thicke's "Wanna Love U Girl" music video.