46. Jennifer Lopez
Occupation: Musician, actress, TV personality
Biggest accomplishment this year: Reaching No. 62 on the Billboard Hot 100 with her latest single, "Live it Up" (featuring Pitbull)
Maybe it wasn't flat-out shocking, but the J-Lo comeback over the last couple years has certainly been unexpected. After some time out of the spot light, she has returned to the limelight with a vengeance, singing, dancing and acting her way back into the A-List spotlight. She recently unveiled "Live It Up," the lead single from her eighth studio album, and earlier this year appeared alongside Jason Statham in the crime thriller Parker. She's also taken on a more executive role, having been named Chief Creative Officer of nuvoTV and producing the upcoming ABC Family show The Fosters this year alone.