In 35 mm, I think a nice and elegant camera would do the work, with an elegant covering (red skin)
Bah, a golden rollei 35. Better this:
http://cgi.ebay.com/Leica-M6-Gold-Th...ayphotohosting

On the other formats:
A hassie, of course.
A Rolleiflex with 2.8 lens, recovered in bright red skin.
On the other side. The "cheap" tachihara 4x5 camera, cheap compared to other LF cameras but with nice cherrywood and brass finish. Seems that has to call attention. Maybe if you stay in the middle of a pedestrian streen with a tripond and the camera, more than one will shoot you with cellphones.