I spied this navy coat last summer in Boston and fell in love with it then. It's lined in a tatersall plaid and not it's on sale! See it here.
This red one is also cute and also on sale. See it here.
This plaid coat is also warm for those who need rain protection plus warmth. See it here.
If you want to be totally functional but also a bit chic, you can try this one here.
And if all else fails, you can always go equestrian. See this here.