Semi-Formal

What it means

Semi-formal is one of the more loosely defined dress codes, which is partly why it causes confusion. In practice, it signals that the occasion calls for clear intentionality and effort, more dressed than smart casual, less demanding than cocktail attire or black tie. Think of it as the dress code for occasions with a real sense of occasion but no strict uniform: a dinner party at a nice restaurant, an afternoon wedding, a graduation reception, or an upscale company event that wants guests to look polished without requiring full evening wear. It appears more frequently on afternoon and early-evening invitations than late-evening ones.

When you’ll see it

Semi-formal appears on invitations to:

• Afternoon and early-evening weddings and receptions
• Corporate award dinners and team celebrations
• Graduation parties and academic ceremonies
• Upscale birthday and anniversary dinners
• Religious celebrations, confirmations, bar and bat mitzvahs, christenings
• Formal university events and formals
• Some fundraising events with a daytime or early-evening format

The time of day matters: semi-formal at 2pm looks different to semi-formal at 7pm. Later occasions push upward toward cocktail attire; earlier ones allow lighter fabrics and daytime colours.

What to wear

Men

• Suit: the foundation of semi-formal for men. A well-fitted suit in navy, charcoal, medium grey, or a subtle pattern. For afternoon occasions, lighter tones and textures are acceptable. For early evening, darker and more refined.
• Dress shirt: white, pale blue, or a subtle stripe. Tucked and pressed.
• Tie: expected at most semi-formal occasions. Silk or fine wool. A pocket square adds polish.
• Shoes: leather oxfords, derbies, or loafers in a fine leather. Black or tan depending on the suit. Polished.
• Alternative: at the less formal end of semi-formal (a daytime celebration, a casual graduation party), a blazer with tailored chinos and a dress shirt can work, provided the overall impression is clearly elevated.

Women

Semi-formal gives women considerable range:

• Dress: a midi or knee-length dress in a print or solid, in a fabric that reads as considered (no jersey, no linen). Wrap dresses, shirt dresses in silk or viscose, and structured sundresses for afternoon events all work.
• Skirt and top: a tailored skirt with a blouse in a fine fabric; a pencil skirt with a silk or chiffon top.
• Trousers: tailored wide-leg or straight-leg trousers with a dressier blouse or structured top. Cropped trousers work if the shoe is refined.
• Jumpsuit: a tailored, structured jumpsuit reads well at semi-formal occasions, particularly in the evening.
• Shoes: heels are common; a refined flat or block heel is fine. The shoe should clearly be a choice rather than an afterthought.

What not to wear

Men: Jeans, regardless of how they are styled. A t-shirt under a blazer. Trainers, even expensive ones. Shorts, even in warm climates.

Women: Casual sundresses in cotton or jersey. Maxi dresses in relaxed fabrics that read more as beach or festival wear. Trainers or overly casual footwear. Anything that could be worn, unchanged, to a casual lunch.

How Andy helps

Semi-formal events often catch people in the middle, unsure whether to go up toward cocktail or keep it relatively relaxed. Andy uses the specific occasion, venue, and time of day alongside what’s in your wardrobe to point you to the right level without guesswork.