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"HI. We - Elisabeth and Gesine Hillmann - are HI.HI.STUDIO, a holistic design studio with a focus on designing objects and interiors.

We also offer creative consultation to help our clients find creative  solutions for their products and brands.

We create iconic experiences, adventures and strategies because we believe that meaningful innovation is always a combination of the company's skills and human needs.

We create user-centered design solutions driven by the goal to consider sustainability in every aspect.

We believe in the power of co-creational processes and personal relationships with our clients for a trusting working atmosphere.

Gesine Elisabeth Hillmann
hihi studio

Photograph by Simon Cornils 


Elisabeth and Gesine are sisters and designers based in Berlin. Before they decided to start their own studio they both worked in several fields of design. 

Working for some of the best known international brands and agencies like Marcel Wanders and Design Affairs they were able to build up a cross- industry know-how that they combine with their believe in the power of co-creational processes.

They love exploring gestures and habits of different social contexts and backgrounds. This is also where they find inspiration.

Striving to create profound value and change they use contemporary methods and digital technologies as well as tangible tools. It is their aspiration to create subjects that tell long-lasting stories with a wondrous twist.

They have always loved the free spirit of their own self initiated projects as well as diving deep into design research and education.

Living and working in Berlin they gather their teams of professionals according to the needs of the projects.​

Bolia, Recaro Kids, Data4Life, Wunderdog, Leitz Acco Brands, Cybex, VIJ5, Velt, Lace Fence, Rimowa,

Pack Easy, Christofle ... and many more 

Companies and clients we are working for and with:

Universität der Künste Berlin

basislabor Design, 2017
»Alien- Ästhetik des Fremden« künstlerische Mitarbeit, with Prof. Robert Scheipner

Universität der Künste Berlin

Experimentelles Design, 2020

»Do what you really want!« künstlerische Mitarbeit, with Prof. Achim Heine

Berlin International University of Applied Sciences,

Product Design 

Universität der Künste Berlin

Experimentelles Design, 2019 »The Invisible Home« künstlerische Mitarbeit, with

Prof. Achim Heine

Universität der Künste Berlin

Experimentelles Design, 2018/19, »Just in case«

künstlerische Mitarbeit, with Prof. Achim Heine

Hochschule Anhalt in Dessau,


Grundlagen der zwei- und dreidimensionalen Gestaltung, Guest Lecturer

Hochschule Anhalt in Dessau,


Integrated Design Studies, (Master)

Guest Lecturer

Universität der Künste Berlin,


ZIM Forschungsprojekt Ecoboard, Wissenschaftliche Mitarbeit with

Prof. Holger Neumann

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