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How Cernucci Boosted Conversions by 3.15% with Real-Time Social Proof Messaging

Alison Wiltshire

28 Jan 2026

In eCommerce, converting visitors into paying customers is paramount. For fashion and lifestyle brands, success depends not only on how good your products look, but how confident shoppers feel when hitting the “buy” button. 

That is the challenge Cernucci set out to solve. Founded in 2018 by British-Brazilian designer Fred Buckley, the London-inspired jewelry and streetwear brand has built a loyal global following through bold design, influencer-led marketing, and a strong online identity. A digital-first business, Cernucci wanted to bring its community-driven, high-energy feel to its website, without losing its premium edge.

A smarter way to showcase popularity

Cernucci’s team was looking for a smarter way to showcase product popularity and create a sense of buzz on the eCommerce site. In early 2025, they partnered with Taggstar to test how real-time social proof messaging, such as “IN DEMAND – Sold 27 times in the last 5 days”, could boost conversions.

As a growing brand, Taggstar’s Social Proof Pro Plan was a perfect match. The solution provides retailers and brands with a low risk and easy implementation of social proof. 

Cernucci ran a 70-day test across its UK and US websites, employing seven real-time message types throughout the customer journey. The effect was almost immediate: engagement grew, conversions lifted, and the test results reached statistical significance within a month.

The powerful results of social proof messaging 

  • 3.15% uplift in conversion, equating to 460+ extra orders
  • £81,000+ increase in revenue during the 70-day test
  • 488% ROI, projected to hit 3,272% across 12 months

Average order value also increased by more than £2, proving that trust doesn’t just drive clicks, it increases spend.

The next phase for Cernucci

Following the success of the test, Cernucci is expanding its social proof strategy, including localized versions for its German site and tests with animated icons to enhance attention during key shopping perioids like Black Friday and Cyber Monday.

For brands competing in fast-moving markets, Cernucci’s success highlights an essential lesson: real-time trust signals are not just nice add-ons, they are revenue drivers.

Want to learn how real-time social proof can transform your conversion rates and deliver a phenomenal ROI like Cernucci? Contact us to learn more.

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