It's the age-old quandary - how to look hip and also "age-appropriate!" (I'm 52.)

My husband and I are going to the Grammy's, and it's "Rock 'n Roll Black Tie" (which in Los Angeles basically means anything goes.) Believe me - no one will be looking at me - but still, I don't want to feel out of place. I don't wear dresses (at all!) and at my age I need to stay far away from anything spandex or leopard.

I'm pretty sure I'm going to wear this long "Neo-Edwardian" jacket I got on sale from J. Peterman:
http://i387.photobucket.com/al.....t/2010.jpg
It hits me just a bit longer than mid-thigh, and makes me feel very hip and cool (it's all in my mind, but I'll take what I can get!) But what to wear with it?

I was thinking of black jeans, black boots, and maybe a long white tuxedo shirt? Any other shirt ideas? I have a long sparkly necklace from AT that would add a little bling, without being over the top. Any other ideas? (I can probably buy a shirt, but a whole new outfit.)

Thanks so much!