Possible Clues:

• "Umbrella" singer
• One-named Barbadian singer
• One-named singer whose real first name is Robyn
• Grammy-winning singer from Barbados
• Singer of the 2010 #1 hit 'Rude Boy'
• 'Take a Bow' singer
• "Rude Boy" R&B singer
• 'Umbrella' Grammy winner
• Stage name of the singer born Robyn Fenty
• Barbadian pop music icon