The 1960’s were all about change. Fashion was no exception. A date or party a few year earlier would have meant gloves and a pretty dress. The 1960’s offered more options as we can see from this article titled, “Long and Lovely, The Look for Evening”. These fashions were found in the October 1963 Good Housekeeping issue where the subject was explored. The term maxi, was not yet introduced, but you will see that the concept was alive and well. Note the coats and the use of tweed and wool in the ankle and floor length separates.
I have scanned the entire article in case you are interested in more details. It is available for pdf download below.