Leather leggings!! I honestly own 6 or 7 different pairs of leather leggings and only 2 of those are in brown the rest are in black, different patterns, skinny, matte, with pattern, no pattern etc. 

All of them are from BCBG because I find their leggings to be of very good quality and  very comfortable.

I wear them all the time. You can use them to make your outfit look dressy, edgy, sophisticated, casual, or glam,  it depends on the shoes, makeup and top.