Vitamin A Swimwear Size Guide: How to Find Your Perfect Fit

Finding swimwear that fits just right can make all the difference in how confident and comfortable you feel by the pool or on the beach. Vitamin A, a California-based swimwear brand known for its sustainable and fashion-forward designs, offers a wide range of styles to suit different body shapes. But choosing the correct size is key to getting the most out of your suit. This guide will walk you through everything you need to know about Vitamin A swimwear sizing—so you can find your perfect fit with ease.


Understanding Vitamin A Swimwear Sizing

Vitamin A swimwear generally follows standard U.S. sizing, with options ranging from XS to XL. However, because swimwear is made with stretchy fabrics and designed to fit snugly, it’s important to consider both your measurements and how you prefer your suit to fit—whether that’s more supportive or more relaxed.

Size Chart Overview

SizeBust (in)Waist (in)Hip (in)
XS31–3224–2534–35
S33–3426–2736–37
M35–3628–2938–39
L37–38.530–31.540–41.5
XL39–4132–3442–44

Note: Some styles may run slightly smaller due to compression fabrics or design features like minimal coverage bottoms.


Tips for Choosing the Right Top Size

Vitamin A offers a range of bikini tops, including triangle, bandeau, bralette, and underwire styles. Consider the following when choosing your top:

  • Smaller Bust (A-B Cups): Triangle and bandeau tops typically work best, providing a flattering and comfortable fit without extra bulk.
  • Medium to Full Bust (C-DD Cups): Opt for underwire or wide-strap tops for added support. Bralette styles with adjustable straps also offer better lift and coverage.
  • Adjustability Matters: Look for tops with ties or sliders so you can fine-tune your fit.

Tips for Choosing the Right Bottom Size

Vitamin A bottoms come in a variety of rises and coverage options, from cheeky Brazilian cuts to full coverage styles.

  • Cheeky or Low-Rise Styles: These tend to run smaller, so consider sizing up if you’re in between sizes.
  • Full Coverage or High-Waisted: These styles offer more support and tend to be more forgiving in fit, great for smoothing and shaping.
  • Mix and Match: You can choose different sizes for tops and bottoms, which is ideal for those with different bust and hip proportions.

One-Piece Swimsuits: Fit and Flexibility

Vitamin A’s one-piece suits are designed to flatter with features like plunging necklines, high-cut legs, and cut-outs. When selecting a one-piece, pay attention to both your torso length and bust-to-hip ratio.

  • Long Torso: Look for suits labeled as long-torso friendly or opt for designs with more stretch.
  • Short Torso: Deep-V and high-leg cuts help elongate your figure.
  • Bust Support: Choose styles with built-in cups or adjustable straps for better shape and comfort.

Sustainable Stretch: What You Should Know About Fabric

Vitamin A uses eco-conscious fabrics like EcoLux™, a blend of recycled nylon and Lycra® spandex. These materials offer a snug, sculpting fit and can stretch over time.

Fit Tip: Your swimsuit should feel slightly snug when dry, as it will relax slightly when wet.


Final Fitting Tips

  • Try it on indoors before wearing it out: Make sure it feels comfortable, stays in place, and offers the coverage and support you want.
  • Read customer reviews: Shoppers often comment on whether a style runs small or large.
  • Measure yourself: Use a flexible measuring tape to check bust, waist, and hip measurements against the size chart.

Conclusion: Confidence Starts With the Right Fit

Vitamin A swimwear combines sustainability, style, and performance—but to truly enjoy the brand’s benefits, proper fit is essential. By understanding your body’s measurements, choosing the right styles for your shape, and noting key design features, you can find a suit that not only looks great but feels great too. Whether you’re planning a tropical getaway or just lounging poolside, Vitamin A offers the flattering fit you deserve.