- July 1 2025
Date
July 1 2025
Mark your calendars—National Bikini Day is celebrated each year on July 5 to honor the invention of the modern bikini in 1946. This holiday is a fun and stylish way to embrace summer, show off your favorite swimwear looks, and reflect on the cultural evolution of this iconic piece of fashion. The U.S. women’s swimwear market alone is valued at $6.15 billion (Statista), showing just how much love there is for the bikini. In this post, we’ll explore celebration ideas, gifting tips, a brief history, and what the future of bikinis looks like—from trending cuts to inclusivity.
When Is National Bikini Day?
National Bikini Day is always celebrated on July 5. It commemorates the day French designer Louis Réard introduced the world to the modern bikini in 1946. Named after the Bikini Atoll, where the U.S. conducted nuclear testing, the swimsuit sparked controversy at the time for its bold design. While the original invention faced some cultural resistance, the bikini would later gain widespread popularity thanks to film, fashion, and media coverage in the decades that followed.
If you’re curious how today’s bikinis evolved in shape and style, check out our Magical Perks of High-Waisted Bikinis for a look into one of the most flattering modern cuts.
Celebration Ideas for National Bikini Day
Whether you’re lounging poolside or soaking up sunshine at the beach, there are plenty of creative ways to celebrate National Bikini Day:
- Host a themed pool or beach party where everyone wears their favorite bikinis
- Share your swimwear look on social using #NationalBikiniDay
- Gift a new bikini to a friend—or treat yourself!
- Plan a bikini try-on or styling session with your besties
Need some outfit inspiration? Discover shimmer-ready styles in our Luminous Collection or try something playful and practical with our Reversible Bikini Bottoms. If you’re into more modest glam, check out our Modest Glitter Bikinis.
A Brief History of the Bikini
The modern bikini made its debut in Paris when Louis Réard unveiled a two-piece design that was smaller than anything previously seen in mainstream swimwear. Despite initial backlash, the bikini gained momentum over the years—especially in the 1960s thanks to Hollywood films and influential style icons. What was once considered scandalous is now a beloved beach staple.
To learn more about the bikini’s evolution, take a look at these historical sources:
Bikini Sales and Style Trends
The global swimwear market is booming, reaching a value of $21.3 billion. Within that growth, bikinis are evolving with new features and styles to meet consumer demand. Reversible swim bottoms, high-waisted cuts, and flattering one-pieces are among the top trends.
More shoppers are prioritizing both comfort and confidence. Today’s bestsellers blend supportive designs with bold patterns, like our fan-favorite Floral Fusion or graphic shapes in the Geometric Collection. Curious about how to style them? Here’s our guide to high-waisted bikini benefits.
What the Future Holds for National Bikini Day
Looking ahead, National Bikini Day is likely to reflect broader industry shifts: more inclusive sizing, body-positive marketing, and better sustainability practices. From biodegradable fabrics to circular fashion initiatives, the future of swimwear is rooted in both style and responsibility.
And for those wondering what to do with older suits when refreshing their wardrobe, check out our post on what to do with old swimwear—because recycling or donating can help make room for your next favorite bikini.
Whether you’re here for the beach vibes, the bold fashion, or the rich cultural backstory, National Bikini Day is the perfect excuse to celebrate confidence and summertime fun in your favorite suit.