The Brunei Princess, HRH Princess Sarah, collaborates with Vivy Yusof on The Royal dUCk headscarf collection carrying an empowering message for every woman. The partnership presents a limited-edition collection of headscarves in cheerful and feminine shades of red, pink, ash blue, peach and decorated with five elements of flowers, bees, diamonds, grids, and a wheel, each chosen for their reference to feminine attributes. 

a. Companies find and develop new product ideas from a variety of sources. Apart from customers, discuss TWO (2) other external sources of new product ideas that Vivy Yusof may use to design her headscarves collections.

b. How does the collaboration between The Brunei Princess, HRH Princess Sarah, and Vivy Yusof on The Royal dUCk headscarves collection, influence the brand equity for dUCk headscarves? Elaborate your answer based on secondary sources of brand knowledge.