Remember that dresses for women and suits for men are standard wedding attire. Women might select a cocktail dress for an evening function or a knee-length sheath dress for a day function, whereas men can get away with a sport coat and slacks for a more casual affair.
Feel free to wear black or white, which are both acceptable colors for springtime nuptials. Women should wear a contrasting shell with a black suit or an embroidered pastel cardigan with a white dress.
Skip the standard work outfit. Women might opt for a satin shell instead of a button-down blouse when wearing a suit, whereas men should skip the white or pinstripe shirts and go for a solid shirt and slightly darker tie.