La DoubleJ Boy Shirt in Kells Blue Petrol
The La DoubleJ Boy Shirt in Kells Blue Petrol is a shirt from the Milan print house founded by J.J. Martin in 2015. Coveti stocks it as part of our Shirts edit, and every piece is checked for authenticity before it leaves us.
La DoubleJ’s Boy Shirt is made in silk twill. It has silk-covered buttons down the front and on cuffs. The Kells print comes in blue petrol. Wear it for the office on Monday and dinner on Friday.
Quick Facts
- Brand: La DoubleJ, Milan, founded in 2015 by J.J. Martin
- Product: Boy Shirt in Kells Blue Petrol
- Collection: Autumn Winter 2026
- Colour: Blue
- Material: 100% Silk
- Size and fit: Regular fit. Garment length 66 cm. Italian sizing, shown here in UK sizes. The model wears a size S.
- Origin: Made in Italy
- Authenticity: 100% authentic La DoubleJ, verified by Coveti
- Delivery and returns: the terms for your country are in the Coveti logistics and returns protocol

How to Wear the Boy Shirt in Kells Blue Petrol
Wear the Boy Shirt with tailored trousers and loafers. For a different look, try it with a printed skirt for a full print-on-print look.
Good for the office on Monday and dinner on Friday. For more ideas, read our guide to styling La DoubleJ.
PRODUCT DETAILS
| Brand | La DoubleJ, Milan |
| Category | Shirts |
| Colour | Blue |
| Material | 100% Silk |
| Size and fit | Regular fit. Garment length 66 cm. Italian sizing, shown here in UK sizes. The model wears a size S. |
| Care | Dry clean only to keep the print, colour and drape at their best. |
| Origin | Made in Italy |
| Style code | SHI0040SIL026KEL03BU05 |
About La DoubleJ
La DoubleJ is a Milan label founded in 2015 by J.J. Martin, an American journalist who has lived in Italy since 2001. Its first prints came from the archive of Mantero, one of the oldest silk houses in Como, and the house still works with Italian mills and artisans. Its look is print on print: swing dresses, silk shirts, pochettes and scarves in bold, joyful patterns made to be mixed. Read is La DoubleJ a luxury brand and where La DoubleJ is made for the full story.
“This is the La DoubleJ I reach for when a plain outfit will not do.”
Gemma Deeks, Fashion Editor at Coveti
How La DoubleJ Compares
Shoppers looking at La DoubleJ often also consider
Zimmermann,
Alémais and
Taller Marmo.
Our La DoubleJ vs Zimmermann guide and our edit of brands like La DoubleJ set out the differences.
Frequently Asked Questions
Is the La DoubleJ Boy Shirt in Kells Blue Petrol authentic?
Yes. Every La DoubleJ piece sold by Coveti is 100% authentic and is checked before dispatch.
What size should I order in the Boy Shirt in Kells Blue Petrol?
La DoubleJ gives no sizing correction for this piece, so order your usual size. The size guide on this page converts Italian, UK and US sizes. Our La DoubleJ size guide has the full conversion table.
What is the Boy Shirt in Kells Blue Petrol made of?
The Boy Shirt in Kells Blue Petrol is made of 100% Silk.
How do I care for the Boy Shirt in Kells Blue Petrol?
Dry clean only to keep the print, colour and drape at their best.
Where is this La DoubleJ piece made?
La DoubleJ designs in Milan. This piece: Made in Italy.
Who founded La DoubleJ?
J.J. Martin founded La DoubleJ in Milan in 2015. The label is known for bold Italian prints worn together, from swing dresses to silk scarves and pochettes.
How does delivery work?
Delivery options, duties and returns depend on your country. The full terms are in the Coveti logistics and returns protocol.
More from La DoubleJ at Coveti
Last updated 01-Oct-26 | Curated and authenticated by Coveti























