I really need some suggestions...?

I am well over 40 and my Husband of 12 yrs. is not. I've noticed lately that when we're in public people kind of look at us funny. It's not like I look old enough to be his mother, but I do look older that he. So here's my dilemma, I want to redo my wardrobe but Im not as thin as I used to be. Where can I buy suitable age appropriate clothing, that doesn't look like its for an over weight 15 yrs. old, or for my Great Aunt Sue? And shoes too! Should I tint my hair a little maybe? My Husband is a very kind and gentle person so when I bring this up he says Im fine the way I am. I know though that if I just stepped it up a notch or two he would like it. Only answer if your sincere please.