Letter A Winner: Adele
Letter B Winner: Britney
Letter C Winner: Christina
Letter D Winner: Drake
Letter E Winner: Eminem
Letter F Winner: Florence + The Machine
Letter G Winner: Gwen Stefani
Letter H Winner: Hilary Duff
Letter I Winner: Inna
Letter J Winner: Janet Jackson
Letter K Winner: Katy Perry
Letter L Winner: Lady Gaga
Letter M Winner: Mariah Carey
Letter N Winner: Nicki Minaj
Letter O Winner: Oprah