About Us
JT Studio Atelier is a Madrid-based costume studio specialising in bespoke, made-to-measure garments for games, brands, events, and experiential projects.
The studio is built on over 20 years of hands-on garment construction experience, developed within some of the most demanding environments in the fashion and luxury industry. This technical foundation informs every project, from intricate character builds to large-scale promotional costumes.
For more than 12 years, the founder worked extensively in high-end fittings, alterations, and garment construction in the UK. This includes over five years with British bridal designer Caroline Castigliano, leading the alterations and fittings department, where precision, structure, and complex garment engineering were central to the work.
Professional experience also includes working within the Alterations Department at Harrods London, handling luxury garments for brands such as Chanel, Dior, Dolce & Gabbana, and Ralph Lauren, as well as direct fittings for flagship boutiques including Alexander McQueen, Stella McCartney, and Victoria Beckham. During this period, fittings were carried out for red carpet clients, celebrities, and members of royalty, often acting as a personal fitter and garment manager.
Additional experience with Pronovias further strengthened expertise in structured garments, couture techniques, and high-level production environments.
JT Studio Atelier was founded in 2020, applying this extensive technical knowledge to bespoke costume design.
Alongside in-house garment construction, JT Studio Atelier works in close collaboration with experienced specialists across different disciplines. This includes sculptors and prop makers such as David (DC Sculptor), and graphic design support through Desirre Arieta.
This structure enables the studio to deliver a broad scope of work, from bespoke costumes to integrated visual and promotional builds, tailored to the specific needs of each project.
The studio translates the discipline, accuracy, and craftsmanship of luxury fashion into character-driven and promotional costumes designed to perform in real-world conditions.
Based in Madrid, the studio works with clients worldwide, offering international production and shipping.
Meet the Team
Dedication. Expertise. Passion.
The studio collaborates with a trusted network of specialists in sculpture, prop making, and graphic design, allowing for a broad and flexible project scope.
Founder and Costume Director
Juliana Marcovicci
With over 20 years of hands-on garment construction experience, Juliana leads JT Studio Atelier with a deep technical foundation developed within the luxury fashion industry. Before founding the studio in 2020, she worked in high-end fittings and alterations in the UK — including leading the fitting department for British bridal designer Caroline Castigliano and working within Harrods London’s alterations department with brands such as Chanel, Dior, Dolce & Gabbana, and Ralph Lauren. This expertise now informs the studio’s bespoke costume work for games, brands, and experiential projects worldwide.
Areas of expertise:
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Bespoke garment construction
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Pattern making & fitting
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Technical costume development
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Luxury finish & structure
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Sculptor & Prop Specialist
David (DC Sculptor)
David brings expert sculpting and prop fabrication to JT Studio Atelier’s collaborative builds. With extensive experience in three-dimensional form, structural detailing, and practical fabrication, he complements the studio’s garment focus by producing armour, props, and hard elements with precision and visual impact. David works closely with the costume team to ensure seamless integration between soft and hard components of each character build.
Areas of expertise:
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Character armour & prop fabrication
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Sculpting & modelling
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Structural detailing
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Material engineering
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Graphic & Visual Design
Desirre Arieta
Desirre leads visual and graphic design collaboration for JT Studio Atelier, contributing expertise in visual storytelling, branding support, and promotional design elements. Her work ensures that costume visuals align with campaign aesthetics and project identity, creating a cohesive narrative across digital and physical deliverables.
Areas of expertise:
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Graphic art direction
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Branding & visual identity
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Digital assets for campaigns
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Visual storytelling
Grow Your Vision
Looking for bespoke costume design for your project?
→ Contact us to discuss your idea.
FEEL FREE TO CONTACT ME FOR FUTURE WORK AND PARTNERSHIPS