Kara is shown to be a pretty, blonde, blue eyed young woman with a rather voluptuous yet lean build figure. 

On Earth, she wears a black vest over a white shirt, blue pants and brown flat shoes. 

As Supergirl, her outfit consists of a blue bodysuit sporting the crest of House El, with knee-high red boots. she also wears a red cape around her neck, like a large scarf/muffler. Her sleeves wrap around her thumb. with yellow symbols on both hands and yellow accents around her suit.