This look with a white blazer and a white linen long sleeve shirt isn't hard to create and is open to more experimentation. Demonstrate your easy-going side by finishing off with brown leather sandals. Now that's how you do semi-casual in your sixties.
This combo of a white blazer and a white linen long sleeve shirt is a winning option when you need to look casually neat in a flash. Introduce a pair of brown leather sandals to the equation to avoid looking overdressed. So if you're on the hunt for outfit inspiration for dressing as you slip into your 60s, this combination is a good example.