Happy Birthday, br Mariah Carey!.br Mariah Carey turns br 54 years old today.br Here are five br fun facts about br the singer.br 1. She was named after the song, br “They Call The Wind Maria.”.br 2. The World Music Awards br honored her as the world's br best-selling recording artist br of the 1990s.br 3. She wonbr two Grammys br following her br debut album.br 4. Carey is known for her br five-note octave and whistle register.br 5. Her holiday album, ‘Merry Christmas,’ br is one of the best-selling Christmas br albums of all time.