At 21, Pembroke Pines native Bella Thorne has 4 movies out, 18 million Instagram followers, 19 cats and the will to survive
(LA Times MLB)

`Come upstairs with me,` Bella Thorne says. She takes off, racing up the neon-lit steps she has painted - every one a different color of the rainbow - to her bedroom, above which iridescent pink bulbs warn: `[f-] off.` She waves me in anyway, past her bed - a mattress on the floor, encased by a...