she explains

"Sluts are confident in their sexuality. Sexuality is a kind of power, and you're not afraid to use that power," Willow said. "Sluts like sex, they want sex, and they're not afraid to go after what they want."

Tara straightened in her chair. Gone was the slouching, mousy girl who seemed to try her best to be invisible. Now the blonde looked around with serene confidence. The world was her bearded oyster, and she just needed to decide where to snack first.

Willow was impressed -- just by improving her posture a bit and smiling like that, Tara had gone from cute to hot without the slightest need for physical improvement. Not that that couldn't come later, of course.