Suit Style & Fit
The double-breasted suit: a guide to fit and wear
- Written by
- The Roomten tailors
- Published
- 2026-09-04
- Last reviewed
- 2026-09-04
- Reading time
- 5 min
- double breasted suit
- suit style
- jacket fit
- guide
In short
A double-breasted jacket should be cut close through the waist, with a 6x2 button configuration for most people, and worn buttoned. It flatters tall and slim to average builds particularly well, and adds formality to any cloth.
Button configurations
- 6x2 — six buttons, two fastening. The standard, and the most flattering for most builds.
- 6x1 — a longer, lower fastening point that lengthens the body.
- 4x2 — a cleaner, more modern front with less visual weight.
Fit is everything
The wrap of cloth across the front means a loose double-breasted jacket looks shapeless immediately. It needs a defined waist, a clean chest and enough length to balance the overlap. Peak lapels and side vents are the traditional pairing.
Body shape
Double-breasted suits are often assumed to suit only slim builds. In practice a well-cut one can flatter a fuller figure — the wrap creates a strong vertical line — but it must be cut for you, which is why it is usually a made-to-measure or bespoke commission rather than an off-the-peg purchase.
Wearing it
Keep it fastened when standing. If you sit for long periods, undo it and refasten as you rise; the habit takes a week. Flannel, chalk stripe and navy hopsack are all excellent double-breasted cloths.