Thallia cut an odd figure.  The pointy hat, the constant smell of nose-tingling incense that hung in the air around her, and the array of wands and scrolls and spell components that hung at her belt, she was pretty obviously a mage of some sort.  

To further complicate matters, Thallia was in much better physical shape than most spell-slinging sorts: her physique possessed the telltale lean slenderness of someone with a great fondness for running.   Combined with her disproportionately slim waist and wide hips gave her an exaggeratedly feminine figure.  

All of this might have served to make her look imposing at a first glance, if only it weren't juxtaposed against the wide-eyed, fresh-faced cheeriness of a young woman in her early twenties.  When accounting for her age and generally relaxed and approachable demeanor, she looked less like a sorceress capable of enormous feats of magical destruction and more like a goth girl dressed convincingly like a witch.

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Walk-up and tell friendly, doubly so for RP hooks.  I'll generally go where the RP leads.