If the setting allows casual dressing, consider wearing an open cardigan and white shorts. For something more on the elegant end to finish off this getup, add a pair of heeled sandals to the mix.
Heeled Sandals with Open Cardigan Smart Casual Outfits In Their 30s
This pairing of an open cardigan and a black playsuit is impeccably chic and yet it's casual enough and ready for anything. Heeled sandals will create a stylish contrast against the rest of the ensemble.