Diana Vickers

At the age of 16, Diana Vickers managed to make herself a musical icon in the U.K. thanks to her appearance in the fifth season of the X-Factor competition in 2008. Vickers sailed through the early rounds of the competition with a voice that judge Simon Cowell compared to Marmite, noting that people would either love it or hate it. The former turned out to be true as Vickers made it through eight rounds of live shows without ever falling into the bottom group; in one week she was given a bye from the competition because of her acute laryngitis. Oddsmakers had Vickers pegged as...