For an off-duty outfit, go for a blue denim shirt and a maxi skirt — these two pieces go really well together. Amp up your whole ensemble with a pair of brown knee high boots.
Brown Knee High Boots with Maxi Skirt Smart Casual Outfits In Their 30s
If you like relaxed dressing, consider wearing a beige knit turtleneck and a maxi skirt. You could perhaps get a bit experimental in the footwear department and class up this outfit with a pair of brown knee high boots.