It's never too much leather, it's all about how you match it up.
Sometimes you see people wearing black leather jacket and black leather pants together which might give it too much of a bike girl look. Wearing a silk blouse inside along with a different color leather jack will suddenly soften your look but still keep it chic.
I am wearing:
Leather Jack: Andrew Marc
Leather pants: ASbyDF
Top: Nanette Lepore