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Endorsement model’s body size: advertising effectiveness to diet food purchase intention through digital celebrity credibility

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  • Purwanto Pur

    (School of Economic Mahardhika Surabaya)

  • Sri Rahayu

    (School of Economic Mahardhika Surabaya)

  • Mochamad Fatchurrohman

    (School of Economic Mahardhika Surabaya)

Abstract

This study aims to explore the effects of body size and appearance – homophily on parasocial interaction (PSI), advertisement recognition, and purchase intention of diet food products promoted by digital celebrities on the social media platform, TikTok. The main focus is to understand how body size and appearance - homophily can influence advertisement effectiveness and purchase decisions, considering the moderating role of digital celebrity credibility. A total of 357 data were collected through an online survey, verified, and analyzed using PLS-SEM. The results showed that advertisement model body size and appearance – homophily had a positive effect on PSI and advertisement recognition. Moreover, PSI was significant in increasing purchase intention of diet food products but advertisement recognition had no direct effect. It was also observed that digital celebrity credibility acted as a moderator to strengthen the relationship between model body size and PSI as well as ad recognition to increase purchase intention. This study provided important insights for marketers on how to select the right digital celebrities based on body size and appearance – homophily to enhance advertising effectiveness on social media. The results showed that digital celebrity credibility could strengthen or weaken the influence of body size on advertising outcomes, especially in sensitive products such as diet food. The original contribution provided is by examining the influence of body size, appearance - homophily, and digital celebrity credibility in the context of social media, specifically TikTok which is an increasingly dominant platform in digital advertising. The results extend the literature on digital celebrities and parasocial interactions, and subsequent application in the marketing of health and weight loss products.

Suggested Citation

  • Purwanto Pur & Sri Rahayu & Mochamad Fatchurrohman, 2025. "Endorsement model’s body size: advertising effectiveness to diet food purchase intention through digital celebrity credibility," International Review on Public and Nonprofit Marketing, Springer;International Association of Public and Non-Profit Marketing, vol. 22(2), pages 239-267, June.
    • Handle: RePEc:spr:irpnmk:v:22:y:2025:i:2:d:10.1007_s12208-024-00426-5
    DOI: 10.1007/s12208-024-00426-5
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    1. Komal Shamim & Muhammad Azam, 2024. "The power of social media influencers: unveiling the impact on consumers’ impulse buying behaviour," Palgrave Communications, Palgrave Macmillan, vol. 11(1), pages 1-11, December.
    2. Sylvie Borau & Jean-François Bonnefon, 2017. "The advertising performance of non-ideal female models as a function of viewers' body mass index: a moderated mediation analysis of two competing affective pathways," Post-Print halshs-01698396, HAL.
    3. Lee, Jung Eun & Watkins, Brandi, 2016. "YouTube vloggers' influence on consumer luxury brand perceptions and intentions," Journal of Business Research, Elsevier, vol. 69(12), pages 5753-5760.
    4. Shamim, Komal & Azam, Muhammad & Islam, Tahir, 2024. "How do social media influencers induce the urge to buy impulsively? Social commerce context," Journal of Retailing and Consumer Services, Elsevier, vol. 77(C).
    5. Ben Haobin Ye & Lawrence Hoc Nang Fong & Jian Ming Luo, 2021. "Parasocial interaction on tourism companies’ social media sites: antecedents and consequences," Current Issues in Tourism, Taylor & Francis Journals, vol. 24(8), pages 1093-1108, April.
    6. Sakib, MD Nazmus & Zolfagharian, Mohammadali & Yazdanparast, Atefeh, 2020. "Does parasocial interaction with weight loss vloggers affect compliance? The role of vlogger characteristics, consumer readiness, and health consciousness," Journal of Retailing and Consumer Services, Elsevier, vol. 52(C).
    7. Kaplan, Andreas M. & Haenlein, Michael, 2010. "Users of the world, unite! The challenges and opportunities of Social Media," Business Horizons, Elsevier, vol. 53(1), pages 59-68, January.
    8. Xiang, Li & Zheng, Xiabing & Lee, Matthew K.O. & Zhao, Dingtao, 2016. "Exploring consumers’ impulse buying behavior on social commerce platform: The role of parasocial interaction," International Journal of Information Management, Elsevier, vol. 36(3), pages 333-347.
    9. Cheung, Man Lai & Leung, Wilson K.S. & Aw, Eugene Cheng-Xi & Koay, Kian Yeik, 2022. "“I follow what you post!†: The role of social media influencers’ content characteristics in consumers' online brand-related activities (COBRAs)," Journal of Retailing and Consumer Services, Elsevier, vol. 66(C).
    10. Elbedweihy, Alaa M. & Jayawardhena, Chanaka & Elsharnouby, Mohamed H. & Elsharnouby, Tamer H., 2016. "Customer relationship building: The role of brand attractiveness and consumer–brand identification," Journal of Business Research, Elsevier, vol. 69(8), pages 2901-2910.
    11. Zhang, Chu-Bing & Zhang, Zhuo-Ping & Chang, Ying & Li, Tian-Ge & Hou, Ru-Jing, 2022. "Effect of WeChat interaction on brand evaluation: A moderated mediation model of para-social interaction and affiliative tendency," Journal of Retailing and Consumer Services, Elsevier, vol. 64(C).
    12. Ladhari, Riadh & Massa, Elodie & Skandrani, Hamida, 2020. "YouTube vloggers’ popularity and influence: The roles of homophily, emotional attachment, and expertise," Journal of Retailing and Consumer Services, Elsevier, vol. 54(C).
    13. Brett Martin & Ekant Veer & Simon Pervan, 2007. "Self-referencing and consumer evaluations of larger-sized female models: A weight locus of control perspective," Marketing Letters, Springer, vol. 18(3), pages 197-209, September.
    14. Sokolova, Karina & Perez, Charles, 2021. "You follow fitness influencers on YouTube. But do you actually exercise? How parasocial relationships, and watching fitness influencers, relate to intentions to exercise," Journal of Retailing and Consumer Services, Elsevier, vol. 58(C).
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