In 2025, fashion is all about comfort, Influencers style, and a touch of nostalgia. At the heart of this trend are flare leggings and oversized hoodies, a dynamic duo that’s taken over wardrobes worldwide. Fueled by TikTok influencers and the unstoppable rise of athleisure, this trend is not just a fashion statement—it’s a cultural movement. Industry experts estimate that athleisure sales, driven by these viral pieces, will hit $10 billion this year, reshaping how we dress and shop.
The Rise of Flare Leggings and Oversized Hoodies
Flare leggings, with their fitted thighs and flared hems, are a modern twist on the classic yoga pant. They’re versatile, flattering, and perfect for everything from workouts to coffee runs. Oversized hoodies, on the other hand, bring cozy streetwear vibes with bold logos, vibrant prints, or minimalist designs. Together, they create a look that’s effortlessly chic, blending comfort with a nod to Y2K and ‘90s fashion.
This pairing isn’t new, but its revival is. Social media, especially TikTok, has breathed new life into the trend. Influencers like Emma Chamberlain and Kendall Jenner have been spotted rocking flare leggings with baggy hoodies, inspiring millions to follow suit. The hashtag #FashionTok has racked up over 79 million posts, with countless videos showcasing styling tips, outfit hauls, and “get ready with me” tutorials featuring these pieces.
Why are these items so popular? They’re practical yet stylish, offering a balance of comfort and confidence. Flare leggings hug the body in all the right places, while oversized hoodies add a relaxed, approachable vibe. Whether you’re heading to the gym, lounging at home, or meeting friends, this combo works for almost any occasion.
TikTok: The Ultimate Fashion Influencer
TikTok has become the go-to platform for fashion inspiration, and its impact on 2025 trends is undeniable. With over a billion active users, the app turns everyday items into must-haves overnight. Short, engaging videos showcasing flare leggings and oversized hoodies have gone viral, driving demand and influencing purchasing decisions.
Influencers play a huge role in this phenomenon. From micro-influencers with a few thousand followers to mega-stars like Charli D’Amelio, these creators share authentic, relatable content that resonates with Gen Z and Millennials. They post try-on hauls, styling hacks, and transformation videos, showing how to pair flare leggings with cropped hoodies or layer them with oversized blazers for a polished look. These videos often include direct links to TikTok Shop, where viewers can buy the exact items they see, making impulse purchases easier than ever.
The hashtag #TikTokMadeMeBuyIt, with 28 billion views, sums up the platform’s power. A single video featuring a unique hoodie design or a sleek pair of flare leggings can lead to thousands of orders in days. For example, a 2023LAT viral video showcasing a color-changing hoodie sparked a frenzy, with manufacturers scrambling to keep up with demand. This fast-paced trend cycle means brands must act quickly to capitalize on what’s hot.
The $10 Billion Athleisure Boom
Athleisure, the category that blends athletic and leisurewear, is booming, and flare leggings and oversized hoodies are at the forefront. Industry reports project that global athleisure sales will reach $10 billion in 2025, a significant jump from previous years. TikTok’s influence is a key driver, with its Shop feature generating billions in sales for clothing brands.
Major retailers like Nike, Alo Yoga, and Lululemon are cashing in, but so are smaller brands and direct-to-consumer labels. SHEIN, for instance, has seen massive success on TikTok Shop, with $3.95 billion in clothing sales in the first half of 2024 alone. Affordable, trendy options from brands like Kaiia and Girlfriend Collective appeal to budget-conscious shoppers, while high-end labels attract those willing to splurge on quality.
The appeal of athleisure lies in its versatility. Flare leggings can be dressed up with heels and a blazer for brunch or paired with sneakers and a hoodie for a casual day out. Oversized hoodies, meanwhile, are perfect for layering, adding warmth and style to any outfit. This adaptability makes them wardrobe staples for people of all ages and lifestyles.
Sustainability is also playing a role. Many brands are now offering flare leggings made from eco-friendly materials like recycled polyester or organic cotton. Consumers, especially younger ones, are drawn to brands that prioritize the environment, and TikTok influencers often highlight these sustainable options in their content.
How Influencers Shape the Trend
TikTok influencers don’t just follow trends—they create them. Stars like Hailey Bieber and Gigi Hadid have been seen sporting flare leggings with oversized hoodies, setting the tone for 2025 fashion. Their outfits, often shared in “outfit of the day” (OOTD) videos, inspire fans to recreate the look. Micro-influencers, who often feel more relatable, are just as impactful, showing how to style these pieces on a budget or for different body types.
These influencers use creative storytelling to connect with their audience. For example, a “day in the life” video might show an influencer wearing flare leggings to a Pilates class, then throwing on an oversized hoodie for a cozy evening at home. This relatability makes viewers feel like they can achieve the same look, driving sales through TikTok Shop or affiliate links.
Brands are taking notice. Many collaborate with influencers to promote their products, offering exclusive discount codes or limited-edition drops. This strategy not only boosts sales but also builds brand loyalty among younger consumers who trust their favorite creators.
Styling Tips for Flare Leggings and Oversized Hoodies
Want to jump on the trend? Here are some easy ways to style flare leggings and oversized hoodies:
- Casual Chic: Pair high-waisted flare leggings with a cropped hoodie and chunky sneakers. Add a baseball cap or tote bag for a preppy touch.
- Athleisure Vibes: Wear flare leggings with a sports bra and an oversized hoodie for a gym-ready look. Finish with sleek trainers and a belt bag.
- Dressed-Up Edge: Style crossover flare leggings with a fitted top and an oversized blazer. Add ankle boots or heels for a night out.
- Cozy Layering: In colder weather, layer flare leggings with a chunky knit sweater under an oversized hoodie. Complete the look with sherpa-lined boots.
The key is to mix textures and proportions. Flare leggings are form-fitting, so pairing them with a loose hoodie creates a balanced silhouette. Don’t be afraid to experiment with colors or patterns—bold prints and pastels are trending in 2025.
The Future of Fashion in 2025
As we move further into 2025, the influence of TikTok and athleisure shows no signs of slowing down. Flare leggings and oversized hoodies are more than just clothing—they’re a lifestyle choice that prioritizes comfort, individuality, and self-expression. With TikTok influencers leading the charge, these pieces will continue to dominate fashion, driving billions in sales and inspiring new ways to dress.
For brands, staying ahead means embracing agility and authenticity. Smaller batches, sustainable materials, and collaborations with influencers are key to keeping up with TikTok’s fast-moving trends. For consumers, it’s about having fun with fashion, mixing and matching to create looks that feel uniquely their own.
Whether you’re scrolling through TikTok for inspiration or building your wardrobe, one thing is clear: flare leggings and oversized hoodies are here to stay, and they’re making 2025 one of the most exciting years for fashion yet.
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