Semi-Formal vs. Formal: What's the Difference?

“Should we do a formal or a semi-formal?” It comes up every year. They’re close cousins, but the differences in venue, attire, budget and vibe matter. Here’s how to tell them apart and choose the right one.

The quick answer

A formal is the chapter’s marquee event of the year, a more elevated venue, dressier attire, and a bigger budget. A semi-formal is a notch more relaxed and affordable, which makes it perfect for a mid-semester event or a second event you couldn’t otherwise fit in.

Attire

• Formal: floor-length or elegant cocktail dresses; suits or tuxedos.
• Semi-formal: cocktail dresses; dress shirts and slacks, blazer optional.

Venue & setting

• Formal: ballrooms, hotels, upscale event spaces, sometimes a destination.
• Semi-formal: restaurants, rooftops, breweries, nicer bars or lofts.

Budget

Formals cost more per head because of the venue, catering and production. Semi-formals stretch further, which is why many chapters do one formal and one or two semi-formals a year. (See our cost breakdown for real numbers.)

Which should your chapter choose?

Pick a formal when you want the signature, dress-up night of the year and have the budget for it. Pick a semi-formal when you want something fun and social without the full production, or when you want to add a second event to the calendar. Plenty of chapters do both.

See how we plan formals & semi-formals →