Alexander Amosu (born 21 June 1975) is a British/Nigerian luxury designer and entrepreneur. He was named by Guinness World Records as having created the world's most expensive suit. His £240,000 Diamond Encrusted BlackBerry Curve 8900 is ranked the world's most expensive BlackBerry. He is also credited with producing the worlds's most expensive champagne. He has created exclusive luxury phone designs for Motorola, BlackBerry Limited, Apple and Samsung.