Rihanna has been handed the top title of 'Ambassador Extraordinary and Plenipotentiary' by Barbados government officials. The singer and entrepreneur was given the role to promote education, tourism and investment for her home country. The 30-year-old said she "couldn't be more proud" to be handed the prestigious title. "Every Barbadian is going to have to play their role in this current effort, and I'm ready and excited to take on the responsibility," she said. "I look forward to working with Prime Minister Mottley and her team to re-imagine Barbados." As well as her multi-platinum musical talents, Rihanna was hailed for her "significant creative acumen and shrewdness in business" by the Caribbean island's PM Mia Amor Mottley. "Rihanna has a deep…