four cuts. three fits. every occasion.
find your cut.
the essential cut
Features: Single-button, notched lapel.
Why we love it: The foundation of every wardrobe. Nothing superfluous - understated chic.
Style tip: Wear it your way.
Fits available: Petite, Regular, Long
View collectionthe boyfriend cut
Features: Double-button, notched lapel.
Why we love it: The foundation of every wardrobe. Nothing superfluous - understated chic.
Style tip: Size up if you like your boyfriends big.
Fits available: Petite, Regular, Long
View collectionthe london cut
Features: Double-breasted, soft shoulder pads and chest drape.
Why we love it: Named after British tailoring, this cut delivers polished ease without effort.
Fits available: Petite, Regular, Long
the power cut
Features: Crisp shoulder pads, cinched waste, double breasted.
Why we love it: A strong, confident sihouette - this girl came to play.
Style tip: With nothing underneath.
Fits available: Petite, Regular, Long
View collectionfour cuts. three fits. every occasion.
Find your cut
the essential cut
Features: Single-button, notched lapel.
Why we love it: The foundation of every wardrobe. Nothing superfluous - understated chic.
Style tip: Wear it your way.
Fits available: Petite, Regular, Long
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find your fit.
If you have a smaller, or shorter frame - under 5ft 3inches we recommend the petite fit. The length is shorter, the shoulders narrower. Everything else is true to size.
SIZING CHART
Subheading
Find your Fit
Find your size in the left column using your bust, waist or hip. Then choose your fit across the top based on your height and shoulder width. Bust, waist and hip are identical across all three fits at every size — only the shoulder width and body length change.
Units:
| Size | Petite | Regular | Long | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Height under 5'3" (under 160 cm) | Height 5'3"–5'7" (160–170 cm) | Height 5'7"–6'2" (170–188 cm) · or if you prefer a longer fit | ||||||||||
| X-Shoulder ★ | Bust | Waist | Hip | X-Shoulder ★ | Bust | Waist | Hip | X-Shoulder ★ | Bust | Waist | Hip | |
| 8 | 39.1 | 80–84 | 64–68 | 87–91 | 40.6 | 80–84 | 64–68 | 87–91 | 40.6 | 80–84 | 64–68 | 87–91 |
| 10 | 40.1 | 84–88 | 68–72 | 91–95 | 41.6 | 84–88 | 68–72 | 91–95 | 41.6 | 84–88 | 68–72 | 91–95 |
| 12 | 41.1 | 88–92 | 72–76 | 95–99 | 42.6 | 88–92 | 72–76 | 95–99 | 42.6 | 88–92 | 72–76 | 95–99 |
| 14 | 42.1 | 92–96 | 76–81 | 99–103 | 43.6 | 92–96 | 76–81 | 99–103 | 43.6 | 92–96 | 76–81 | 99–103 |
| 16 | 43.1 | 96–100 | 81–86 | 103–107 | 44.6 | 96–100 | 81–86 | 103–107 | 44.6 | 96–100 | 81–86 | 103–107 |
| 18 | 44.1 | 100–105 | 86–91 | 107–112 | 45.6 | 100–105 | 86–91 | 107–112 | 45.6 | 100–105 | 86–91 | 107–112 |
All measurements in cm unless inches selected above. Body measurements only — not garment measurements. Between sizes? Always size up.
★ How to measure your X-shoulder
Take this measurement first. It determines whether you need a Petite or Regular fit — and it has nothing to do with your dress size.
Where to measure from: Stand with your arms relaxed at your sides. Place the tape at the very tip of your left shoulder — the bony point where the arm drops off the body, not the widest point of the arm. Run the tape horizontally across your upper back, following the natural curve of the shoulder blades, to the tip of your right shoulder. The tape should follow the line that a shoulder seam would take on a well-fitting jacket.
Ask someone to take this measurement from behind you if possible — it is difficult to measure accurately alone.
Three things to avoid:
- Measuring too low — across the mid-back gives a wider, inaccurate reading.
- Measuring at the widest point of the arm — find the bony shoulder tip, not the muscle.
- Measuring from the front — always measure across the back.
How to measure bust, waist and hip
Bust
Around the fullest part of your bust, tape level and parallel to the floor. Wear your everyday bra. Tape snug but not compressing.
Waist
At the narrowest point of your torso, usually 2–3 cm above the navel. Bend gently to one side to find the natural crease. Do not pull tight.
Hip
Around the fullest part of your hips, approximately 20 cm below your natural waist. Feet together, tape level and not twisted.
Still not sure?
Our size guide is designed so you can find your fit independently. If you would like extra help — or if you are between sizes or fits — our team is happy to advise.
No tape measure? We will send you one for a £5 deposit. If you go on to place an order, the £5 comes off your purchase. If you decide JKTS is not for you, your deposit goes to our charity partner instead.
Any other questions — get in touch →
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