The celebrity & influencer effect: How social media stars dictate what we buy

From Hailey Bieber’s Nails to Molly-Mae’s Jackets – The Trends That Sell Out Instantly

Have you ever scrolled through Instagram or TikTok, seen a celebrity wearing something stylish, and suddenly felt the need to own it? You’re not alone. The power of celebrity and influencer endorsements has never been stronger, shaping our buying decisions in ways that traditional advertising never could. When an A-lister or social media sensation posts about a product, demand skyrockets - often leading to sell-outs within hours.

Before TikTok trends took over, Zoe Sugg was one of the first influencers to demonstrate the power of social media in shaping consumer habits. Through her YouTube channel and blog, she introduced millions to beauty products, home decor, and lifestyle trends. Even years later, her recommendations still carry weight, proving that long-term influence is just as valuable as short-term virality.

One of the biggest trendsetters in recent years is Hailey Bieber. Whether it’s her effortlessly chic street style or her glowing, minimal makeup looks, fans rush to replicate her aesthetic. The most notable example? Her glazed donut nails. The pearlescent, ultra-glossy manicure went viral in 2022, and suddenly, everyone wanted to achieve the same sleek and polished look. 

Hailey’s influence extends beyond beauty trends. Her skincare brand, Rhode, has been a massive success, with products selling out almost instantly upon launch. The Peptide Lip Treatment became a must-have, thanks to her consistent promotion and the aspirational yet attainable feel she portrays.

Few influencers have a grip on consumer buying habits quite like Molly-Mae Hague. She has an unmatched ability to make everyday items go viral. The Molly-Mae Effect is real - whether it’s a high-street jacket, a designer handbag, or a simple kitchen gadget, anything she recommends is bound to sell out.

One of the best examples is the Zara leather jacket she casually wore in an Instagram post. Within days, it was out of stock online and in stores. Similarly, her partnership with PrettyLittleThing reinforced her fashion icon status, with collections selling out in record time. Her neutral-toned, effortlessly cool aesthetic has set the standard for modern influencer fashion.

When Selena Gomez launched Rare Beauty, few anticipated just how influential the brand would become. Unlike traditional celebrity beauty lines that rely solely on a famous name, Rare Beauty stood out due to its high-quality products and commitment to inclusivity.

Selena’s authenticity and transparency about mental health and self-love have made her brand more than just a makeup company - it’s a movement that fans deeply connect with.

Why Does This Happen? The Psychology of Influence

So why do we rush to buy what celebrities and influencers promote? It boils down to trust and relatability. Unlike traditional ads, influencers feel more personal - like a friend giving a recommendation rather than a faceless brand pushing a product. Seeing someone you admire using a product creates an emotional connection, making you more likely to purchase it.

Additionally, the FOMO (fear of missing out) effect plays a huge role. When fans see an item flying off the shelves or trending online, they feel a sense of urgency to grab it before it’s gone. This exclusivity factor makes influencer-endorsed products even more desirable.

Whether it’s Hailey Bieber’s nails, Molly-Mae’s fashion, or Selena Gomez’s beauty empire, one thing is clear: when celebrities and influencers promote something, it sells. Their ability to shape trends and dictate what we wear, use, and love is undeniable.