Demi Moore turns 47 today. Leonardo DiCaprio is turning 35. Calista Flockhart is 45. Senator Barbara Boxer of California is turning 69. Stanley Tucci is 49. Jane Pratt, the founder of Sassy and Jane, is 47. Will & Grace co-creator Max Mutchnick is turning 44. Writer Mary Gaitskill is turning 55. Comedian and actor…

Alas, not every post-American Idol story ends in record deals and sellout tours—for every Carrie Underwood or Kelly Clarkson, there is a Jessica Sierra, the husky-voiced, bad-girl contestant from the show's fourth season who's had repeated run-ins with the law since being ejected from the karaoke showcase Eden…