Smart casual is the most-used dress code in Britain and the least clearly defined. It appears on work emails, restaurant booking confirmations and office handbooks — yet is never accompanied by clear instructions.
This is our take on smart casual — how to avoid over/under dressing, what it means at different occasions and how to effortlessly meet the dress code brief.
What does smart casual mean?
Smart casual means tailored, carefully chosen clothing worn without formality. It sits between business casual and casual: more polished than jeans and a jumper, less structured than a suit.
The clearest way to think about it is in combinations, rather than a categories. Smart casual is one structured piece worn with something more relaxed.
Two structured pieces together read as business formal. Two relaxed pieces read as casual. One of each is smart casual. If in doubt this can be your go to rule.
Rather than focusing on the garments themselves, nail smart casual by focusing on:
- Fit. A tailored trouser that fits properly does more work than an expensive one that doesn’t.
- Fabric. Wool, cotton, TENCEL™ Lyocell and ponte read as considered. Heavy jersey, distressed denim and technical fabrics read as casual.
- Condition. No scuffed shoes and no bobbled knitwear. Aim for a polished finish.
Shop our collection of tailored trousers, blazers and more.
Are jeans smart casual?
Yes - dark, well-cut jeans in good condition are considered smart casual, provided the rest of the outfit is doing the structured half of the job.
This is the most common question we get about smart casual. The below checklist can help clear up the confusion:
Jeans that work:
- A dark, single tone wash — indigo, black, deep blue
- Straight, wide leg, barrel or a clean bootcut
- No rips and no fading at the knee
- Hem either just off the floor or clearly cropped
Jeans that don’t:
- Light or patchy washes
- Distressed, ripped or embellished
- Anything that looks worn in rather than well made
The reason dark denim passes is that it reads as one clean block of colour, much like a tailored trouser.
Browse our full collection denim, or read our guide to styling barrel leg jeans here.
Smart casual vs business casual vs business formal
These three get used interchangeably and shouldn’t be. The distinction is mostly about how much structure is required, not how expensive the clothes are.
The short version: business casual is smart casual with the relaxed half removed. For more inspiration for what to wear this autumn winter to work, see our full guide.
What to wear for smart casual, by occasion
Though smart casual comes up in a number of contexts, the below four are the most common and should cover most dress codes.
Smart casual at work
Tailored wide leg trousers, a fine knit or a blouse, and a loafer or ankle boot. Add a blazer or a tailored coat if you have anything client-facing or more formal in the diary.
Smart casual for dinner or drinks
This is where denim earns its place. Dark wide leg or barrel jeans, a silk or Lyocell blouse, a heeled mule or boot. Or a simple midi dress with a tailored coat over the top.
Evening smart casual tolerates more relaxed shapes.
Smart casual for a daytime event
For lunch, a christening or a summer party — think a wrap dress or a midi with a flat sandal or block heel. Tailored trousers with a blouse work equally well and are easier to sit down in.
Smart casual at the weekend
The loosest interpretation. Straight leg jeans, a good T-shirt or a crewneck knit, a clean leather trainer, and a jacket with some structure — a bomber, a short trench, a military-cut jacket. This is smart casual as most people actually live it.
What to leave out
Many smart casual mistakes come from one of these:
- Anything distressed or deliberately worn-looking. Ripped denim, faded black, frayed hems.
- Athletic wear of any kind. Leggings, running shoes, technical outer layers, logo sweatshirts.
- Very short hemlines or anything strappy. Not because of formality, but because smart casual reads as daytime.
- Flip flops and pool slides. The one shoe rule that hasn’t relaxed.
- Full matched tailoring. A trouser suit worn as a suit is business formal. Split it up and it becomes smart casual immediately.
Frequently asked questions
In short
Smart casual is one structured piece and one relaxed piece, in good fabric, in good condition. Dark denim counts. Minimal leather trainers usually count. A matched suit doesn’t.
If you own well-cut tailoring and one pair of dark jeans, you can meet this dress code for the rest of your life without buying anything else.