X Factor: the final 12 Ella Henderson A strong contender since she wowed the auditions with a self-penned ballad about her late grandfather, the accomplished Grimsby teenager has maintained that high standard and is now hot favourite. Even Cher herself has expressed approval of Henderson reinventing Believe as a soulful hymn. At 16, she'd be the youngest ever winner. She also has an impressively huge mouth when she opens it to sing. My starting price: 5-2 Picture: Ken McKay