When choosing a dress for a spring/summer work event, the primary consideration must be that Surely it’s appropriate for the occasion.
a very short skirt will not be suitable if you work in a legal firm, for sake of example, You may well be representing your firm at the event, and projecting the correct image is vital.
At a work event, it my be wise to avoid wearing a dress that displays should be very formal, and women need to appear ‘well groomed’. Eventually, don’t forget to take the shoes that you intend to wear with the dress, that you can see how the two look together, when shopping for a dress.