How to Choose the Right Size with Lululemon Swimsuit Size Guide

Finding the perfect swimsuit is about more than just style—it’s about comfort, confidence, and the right fit. When it comes to Lululemon swimwear, their sleek, athletic designs are crafted to support movement and flatter the body, but getting the right size is key to getting the most out of your suit. Whether you’re shopping for a one-piece or mix-and-match bikini separates, this guide will walk you through how to choose the right Lululemon swimsuit size with ease.


Understanding Lululemon Swimwear Sizing

Lululemon uses numerical sizing (2–14) for their women’s swimwear, aligning closely with their activewear sizes. Here’s a quick look at what those numbers generally represent:

SizeBust (in)Waist (in)Hip (in)
231–3224–2533–34
433–3426–2735–36
635–3628–2937–38
837–3830–3139–40
1039–4032–3341–42
1241–4234–3543–44
1443–4436–3745–46

Tip: If you’re in between sizes, consider how you want the swimsuit to feel—snug and secure for athletic activity, or slightly looser for lounging.


How Lululemon Swimsuits Fit

Lululemon swimwear is designed with active performance in mind, meaning the fits tend to be more supportive and compressive than traditional fashion swim brands.

  • Tops: Generally true to size, but those with larger busts may prefer sizing up for comfort and coverage.
  • Bottoms: Most Lululemon bottoms have a secure, mid- or high-rise fit. If you’re curvier through the hips, you might prefer sizing up for a smoother look.
  • One-Pieces: Look for suits that match your torso length—long torsos may benefit from sizing up, especially in compressive styles.

How to Measure Yourself for Lululemon Swim

To find your ideal size, measure the following areas using a soft measuring tape:

  • Bust: Measure around the fullest part of your chest, keeping the tape level.
  • Waist: Find your natural waist—usually the smallest part of your torso—and measure around it.
  • Hips: Measure around the fullest part of your hips and rear while standing straight.

Once you have your measurements, compare them to the size chart above for a tailored fit.


Support Levels for Swim Tops

Lululemon makes swim tops in a variety of styles with different support levels:

  • Light Support: Best for A/B cups. Triangle and bandeau styles fall into this category.
  • Medium Support: Ideal for B/C cups. Racerback and high-neck designs offer more structure.
  • High Support: Recommended for C/D+ cups. These styles often have wide straps, compression fabric, and secure underbust bands.

Many tops also include removable cups and adjustable straps to fine-tune your fit.


Try-On Tips and What to Expect

  • Expect a Snug Fit: Lululemon swim fabric is compressive and will relax slightly in the water.
  • Check the Return Policy: Lululemon allows swimwear returns as long as the hygiene liner is intact and tags are attached.
  • Use the Size Assistant: Lululemon’s online store features a size recommendation tool based on your fit preferences and body data.

Final Thoughts: Sizing for Confidence and Performance

Choosing the right size in a Lululemon swimsuit is about more than numbers—it’s about knowing how you want to feel. Whether you’re diving into ocean waves, doing laps, or simply soaking up sun, a well-fitting suit gives you freedom to move with confidence. Use the size chart, measure carefully, and don’t be afraid to size up or down depending on the style. With the right fit, your Lululemon swimwear will be a go-to staple for seasons to come.