Style Rookie is not your little sister’s blog.

Thirteen-year-old Tavi Gevinson has wide eyes, growing pains and gym class angst, and she’s not afraid to use them. Her cute yet incisive runway commentary capitalizes on these and other ironies of a little girl with comparatively big industry awareness.

While “Style Rookie” has already spent over a year in the fashion blogosphere, its diminutive author has refined her voice and tastes. She’s proving herself a dark horse among tired steeds like The Sartorialist and Style Bubble. With punchy quips and self-styled shoots in two-sizes-too-big haute couture, Tavi packs more wit per square-inch of her pre-pubescent body than any stick figure blogging from a seventh row seat at the latest Lanvin show.