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New and existing companies are looking for ways to thrive in a competitive environment with innovative business models while respecting society and avoiding actions that harm the planet. Trends such as the circular economy, fair trade, lowsumerism, and the sharing economy are some of the many emerging entrepreneurial approaches that address this issue, but there is still a gap between what theory argues and the levels of environmental and social sustainability realized when theory is put into practice. In fact, most research on the topic of sustainable business models is still exploratory and does not fully acknowledge these emerging approaches, whose definitions, boundaries, and defining characteristics are still somewhat vague. This study seeks to contribute to the understanding of the inner entrepreneurial dynamics of innovative sustainable business models. In particular, we focus on the fashion business, a resource-intensive industry in which opportunities to reduce environmental impacts and to innovate business models abound. The aim of our research is to investigate innovative business models in the fashion industry that have sustainability as their defining characteristic, especially in terms of value proposition. In order to do that, we combine a systematic review of the literature with empirical research comprised of six interviews with specialists in sustainability, business model innovation, and the fashion industry, along with eight case studies on innovative fashion startups we define as 'born sustainable.' As a result, we propose a synthesizing framework that discloses trends and drivers of innovative and sustainable business models in the fashion industry. We also highlight opportunities and challenges for researchers and entrepreneurs interested in this topic.

The internet is fertile ground for multisided platforms that articulate the production of goods or the execution of services between third parties, thus relying on value co-creation as their core business model mechanism. However, an understanding of co-creation that underlies dynamics and implications for business model design and innovation is still dispersed and fragmented along a number of literature streams. This article aims to provide an understanding of the value co-creation process in web-based multisided platforms. A conceptual framework is proposed based on the combination of an analysis of a comprehensive systematic literature review, interviews with academics and entrepreneurs, and an analysis of secondary data on representative cases of multisided business models based on value co-creation. We offer a model of value co-creation in multisided platforms and advance a number of propositions regarding value dynamics, including the role of the focal firm in defining and maintaining value creation, propositions, and capture structures with consequences to monetization schemes and actors' contributions and motivations for value co-creation. This article contributes to the understanding of the co-creation phenomenon, especially in multiple actor interaction regimes, and raises a number of suggestions for future research.