yobigd20 - Me neither, a friend said if she rode in the Tesla she'd want to be a worthy seat cover. So i thought I'd ask this esteemed crowd. Off to a good start...
The cool casual black pants and two-toned red-gray shirts that the Tesla sales girls wear! It's a Silicon Valley car after all...
An S? What color? If you want her to look good, she needs to match but contrast the car so she stands out. Ideally your S is black or white. They're neutral and go with anything. Something with classic elegance to match the styling of the car. (OK, that's also my personal bias. I like solid color and smooth texture and elegant curves but without extremes.) And in that photo there's only 1 really elegant thing. Not saying the others don't look good, just not quite matching.
I must be getting old, because I look at this pic and all I can think is "Get your darned spike heels off my door, there isn't any paint armor there!!!!"
Assuming an attractive female - the less the better. Roadster, top off, windows down, So Cal sunny & warm - why any clothes at all?