Brand ambassadors play a vital role at every stage of the marketing funnel, from building awareness to driving loyalty. As a result, more brands are integrating influencers into every phase of their strategy. It’s a smart move: according to Statista, the global influencer marketing market has more than tripled since 2020 and is projected to hit a record US$33 billion by the end of 2025.
However, brand ambassador marketing has its challenges. To do it well, brands need to work with the right talent, use cohesive messaging and implement the right tools that enable them to measure the real impact of their ambassador-led campaigns.
Drawing on insights from our Brand Ambassador Marketing 2025 Report, we’ll take you through what you need to know about ambassador marketing right now to nail your campaigns this year and beyond.
What Is a Brand Ambassador?
Influencer marketing may be the term on everyone’s lips, but brand ambassadors can be anyone who’s passionately vocal about your brand—from celebrities and media personalities to customers and employees.
Brand ambassadors help build trust by sharing authentic content, experiences and recommendations. Unlike one-off influencer partnerships, ambassadors typically have longer-term relationships with the brand and are deeply aligned with its values and audience. They come across as genuinely caring about the brand, not just as paid promoters. That’s what makes them so powerful, especially to audiences who value authenticity above all else (like Gen Z).
Voice Echo: Measuring the Hidden Impact of Ambassadors
One of the most powerful—and often underestimated—aspects of ambassador marketing is the ripple effect it creates. Formal partnerships with celebrities or influencers don’t just generate likes and comments on a single post. They can lead to earned media coverage, brand mentions from partners and fan-driven buzz that boosts long-term brand equity.
For example, when an ambassador posts about a brand on their Instagram account, it generates direct impact. Meanwhile, a Celebrity or Influencer wearing the same brand on a red carpet can generate impact through other Voices posting about it—even if they don’t post about it themselves. This is what we call Indirect Echo.
Voice Echo is our framework designed to capture both the Direct Impact and Indirect Echo of ambassador campaigns, alongside any impact generated on the brand’s own channels. We measure this using Media Impact Value (MIV®)—a proprietary metric that assigns a monetary value to all media exposure, allowing brands to compare results across platforms and channels and more accurately gauge the ROI of campaigns.
Consider Zendaya’s partnership with Louis Vuitton. Our analysis reveals that 0% of the campaign’s total value (an impressive $81M in MIV) came from Direct Impact—meaning Zendaya didn’t post about it at all. Instead, 3% was driven by LV’s own accounts, while a remarkable 97% of the value came from Indirect Echo—buzz generated by others in response to the partnership.
So, as we can see, Voice Echo gives us a far-reaching view of how the campaign truly performed—well beyond what’s apparent with standard metrics. For brands, this ability to make the invisible visible is a superpower in the realm of ambassador marketing.
Celebrities vs Influencers: Who Drives the Most Value?
A big question for Fashion, Lifestyle and Beauty (FLB) brands is where to direct their ambassador marketing budgets: toward celebrity partnerships, influencer collaborations or both?
In reality, the choice isn’t about one being better than the other—it’s about understanding how each type of ambassador contributes to your brand goals and where their impact shows up across the funnel.
At a high level, Celebrities are widely recognized public figures (such as actors, athletes or musicians), while Influencers are digital-first creators who’ve built strong communities around niche or lifestyle-driven content. Both can be incredibly valuable as brand ambassadors, but they often serve different purposes.
Influencer partnerships are often more short-term and content-driven, designed to deliver a spike in visibility and Direct Impact through high-performing posts. This makes them a strong play for things like product launches and seasonal campaigns.
Celebrity ambassadorships, meanwhile, tend to generate a higher level of Indirect Echo. Even when a celebrity doesn’t post themselves, their association with a brand (through events, campaigns or public appearances) can lead to significant earned media coverage and social buzz. All of which builds long-term brand equity.
Remember that this is a general trend and not a rule. Influencers can also become powerful long-term brand ambassadors, especially when there’s strong alignment with the brand’s values. Our case study for Alo, for example, shows that influencers like Kendall Jenner and Alix Earle generated more Indirect Echo for the brand than even high-profile celebrities like Taylor Swift.
So which should you prioritize, celebrities or influencers? It’s not about picking one over the other, but understanding who’s driving what kind of impact. Voice Echo helps uncover where that impact is really coming from, showing which ambassadors are delivering the most value—whether through direct engagement or indirect amplification. The ultimate goal is to build the right Voice Mix that balances both for maximum impact.
Brand Ambassador Metrics: Why Qualitative Analysis Is Key
It’s easy to focus on numbers (like reach, engagement or ROI), but the real power of ambassador marketing lies in how the talent you work with shapes the way your brand is talked about. Today, FLB brands operate in culturally rich, emotionally charged spaces where perception is everything. And that’s where qualitative insights become essential.
Think of it this way: When you partner with an ambassador, you want to expand your reach, yes—but you also want to generate the right kind of conversation. You want to invest in long-term collaborations that make your brand desirable in the eyes of consumers, deepen emotional connections and make your brand feel culturally relevant. Performance metrics alone can’t measure these outcomes.
That’s why we pair traditional KPIs with an AI-powered qualitative framework—to uncover the value themes each ambassador brings to the table. This approach analyzes thousands of articles and social conversations to identify recurring ideas, themes and keywords. It reveals whether a partnership is reinforcing values like “authenticity,” “nostalgia” or “inclusivity”—or helping shift a brand’s identity into new cultural territory.
Some patterns are clear: product-focused themes such as “craftsmanship” or “technical innovation” remain largely in the brand’s control. But lifestyle and audience-driven values? That’s where ambassadors lead. Our analysis found that:
- 53% of all brand value themes were directly driven by the ambassador.
- 47% of brand-ambassador conversations centered on lifestyle and audience connection—values like “performance lifestyle,” “recognition,” and “emotional resonance.”
Key takeaway? Ambassadors don’t just represent a brand, they actively shape its narrative. For brands looking to reinforce or evolve their positioning, qualitative insight is no longer optional, it’s essential. By understanding the deeper values ambassadors bring and measuring both direct and indirect impact, brands can make smarter, more strategic choices.
Case Study: Aligning Brand Values With Lewis Hamilton
With more than 39 million followers, Lewis Hamilton is far more than just a Formula 1 champion. He’s a global style icon with influence that reaches across sport, fashion and culture. Known for his bold personal style and strong values, Hamilton more than proves his worth as an ambassador for brands wanting to stay culturally relevant while aligning with values like innovation, performance and sustainability.
Our report breaks down two successful campaigns from Lewis in 2024: IWC and Dior.
Despite Lewis Hamilton not posting about the Dior menswear capsule he fronted, the campaign delivered remarkable results thanks to Indirect Echo (which accounted for 82.8% of the campaign’s MIV during its first month). Once again, this proves that a well-aligned ambassador can drive major buzz without a single post.
Meanwhile, Hamilton continues to deliver for IWC despite their relationship enduring for over a decade. In just one month, he generated over $1.2M in direct media impact, showing that long-term ambassadorships can retain—and even grow—their influence when values and cultural relevance are maintained.
Across both partnerships, our qualitative analysis found that “Sustainability” emerged as a shared value. This reinforces the importance of understanding how each ambassador is perceived and selecting those who not only amplify reach but also embody the deeper values your brand wants to be known for.
Beyond Metrics: The Future of Strategic Ambassador Partnerships
Mastering brand ambassador marketing has become utterly vital for FLB brands. And, as we’ve seen, the most impactful brand ambassadors aren’t always the ones with the most reach, but the ones who stand for something that aligns with a brand’s values and vision.
As Anusha Couttigane, Head of Advisory at Vogue Business, says: “When we look at the data of which influencers generate the most engagement, we can often see that it’s not just people who are famous for being famous, but people who vocally stand for something, whether that’s representation of a shared identity or minority group, a passion for a pursuit, a lust for life, creativity, curiosity or positive change.”
To harness the full power of ambassador marketing, brands need to go beyond standard metrics. Along with MIV, tools like Voice Echo allow you to measure both direct and indirect impact, capturing the real value of a partnership, from owned content to media buzz and cultural conversation.
Just as important is pairing performance data with qualitative insight. Understanding the values an ambassador brings helps you choose partners who will not only promote your products but actively shape how your brand is perceived.
In the end, it’s about building the right Voice Mix—one that combines cultural relevance, emotional resonance and measurable results. With the right ambassadors and the right tools, your brand doesn’t just get seen, it gets remembered.
Don’t forget to download the full Brand Ambassador Marketing Report 2025 for more insights and case studies, as well as Your Ultimate Ambassadorships Checklist with 10 key questions to ask before you embark on your next partnership.
Find Out What Makes Brand Ambassador Marketing Truly Impactful
By Luna Weissman
