Unless you’ve been vacationing on Venus, you know that short haircuts — specifically, the cropped on the sides, long on top look — are super-trendy right now. But it wasn’t until last week, when eternally long-haired Janet Jackson debuted her sleek crop, that knew the cut was officially this season’s ‘do du jour. From Miss Jackson If You’re Nasty to Toni Braxton, here are our favorite celebrity short cuts.