Celebrity endorsement and influencer culture have become central forces in shaping contemporary consumer behavior, especially among younger age groups. This study examines how celebrity lifestyles and social media content influence consumption patterns, lifestyle imitation, self-image, and psychological well-being across different age categories. Using a quantitative research design, primary data were collected from 218 respondents through structured questionnaires, supported by secondary literature on celebrity endorsement, identity formation, and media effects. The sample is dominated by young adults (18–24 years) and students, indicating that early adulthood is a critical stage for celebrity-driven influence. Dichotomous and Likert-scale analyses reveal that while a substantial proportion of respondents follow celebrities, engage with their content, and report being influenced by endorsements—particularly in terms of purchase decisions—actual conversion into purchases of celebrity-owned brands remains comparatively lower. Frequency-based and behavioural Likert scales, tested through one-way ANOVA, show statistically significant variation across behaviours such as lifestyle comparison, perceived pressure to maintain beauty standards, and satisfaction with one’s own lifestyle. The findings suggest a nuanced pattern: celebrity culture is pervasive and does generate aspirational pressure and materialistic tendencies, yet many respondents also display skepticism, critical awareness of sponsored content, and a degree of psychological resilience. The study contributes to existing literature by integrating ethical concerns and a longitudinal perspective, highlighting implications for brands, influencers, educators, and regulators in promoting responsible, non-exploitative marketing practices that do not exacerbate financial impulsiveness, body image issues, or self-concept instability among young consumers..