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The Maternity Swimwear Fit Guide

Straps, Bust Support, and Fabrics That Keep You Comfortable All Day

When you’re expecting, embracing and celebrating your changing body is essential—and that means you should definitely enjoy some relaxing time in the sun or a refreshing swim. However, finding maternity swimwear that truly fits your growing bump, offers the right support for your changing bust, and keeps you comfortable all day can be quite tricky.

Whether you’re planning a beach getaway, kicking back by the pool, or doing prenatal water exercises, having the right swimsuit can make a huge difference in how you feel and move. In this detailed guide, we’ll take you through the key features to look for in maternity swimwear, like adjustable straps that grow with you, breathable fabrics that stretch without losing their shape, and designs that provide gentle but effective support. Plus, we’ll share practical tips to help you stay confident, comfortable, and stylish no matter what stage of pregnancy you’re at.

pregnant woman in a swimsuit pregnant woman in a blue swimsuit The Maternity Swimwear Fit Guide stock pictures, royalty-free photos & images

Why Proper Fit Matters in Maternity Swimwear

Your body changes throughout pregnancy, especially around the bust and belly. Ill-fitting swimwear can cause discomfort, restrict movement, or fail to provide the support you need. According to Raising Children Network, choosing maternity clothes that adapt to your body helps reduce strain and keeps you comfortable.

Straps: Adjustable and Supportive

  • Look for Adjustable Straps
     Adjustable straps allow you to customise the fit as your body changes, ensuring your swimwear stays secure without digging into your shoulders.

  • Wide Straps for Comfort
     Wider straps distribute weight better and reduce shoulder strain, which is especially important as your bust grows.

  • Cross-Back or Racerback Styles
    These designs offer extra support and prevent straps from slipping, ideal for active days in the water.

Bust Support: Essential for Comfort

  • Built-In Shelf Bras or Underwire Alternatives
    Many maternity swimsuits include built-in shelf bras or soft underwire alternatives that provide gentle lift and support without discomfort.

  • Soft Cups and Padding
     Removable padding or soft cups can enhance shape and comfort, adapting to your changing bust size.

  • Stretchy, Supportive Fabric
    Look for fabrics with good elasticity that hold everything in place while allowing freedom of movement.

Fabrics: Breathable, Stretchy, and Durable

  • Choose Breathable Materials
    Fabrics like nylon-spandex blends or bamboo-infused textiles offer breathability and moisture-wicking properties to keep you cool and dry.

  • Opt for Stretch and Recovery
     Swimwear should stretch comfortably over your bump and bust but also recover its shape after wear.

  • Chlorine and UV Resistance
     Durable fabrics that resist chlorine and UV damage will keep your swimwear looking and feeling great longer.

Additional Tips for Maternity Swimwear Comfort

  • Consider Tankinis or Two-Piece Sets
     These offer flexibility and easier bathroom access, which can be a blessing during pregnancy.

  • Look for Ruched or Draped Designs
     These styles accommodate your growing bump and provide a flattering silhouette.

  • Don’t Forget Sun Protection
    Some maternity swimwear includes UPF protection to shield your skin from harmful rays.

A pregnant woman in a turquoise bikini sits by a swimming pool A pregnant woman in a turquoise bikini sits by a swimming pool. The Maternity Swimwear Fit Guide stock pictures, royalty-free photos & images

Supporting Your Comfort Beyond Swimwear

Comfort doesn’t stop at swimwear. Sleepybelly’s maternity range, including their 3-Piece Maternity Pyjama Set, offers breathable, soft fabrics designed for your changing body. After a day in the sun or water, slipping into comfortable maternity pyjamas can help you relax and recover.

Final Thoughts

Choosing the right maternity swimwear is about more than just style — it’s about support, comfort, and confidence. By focusing on adjustable straps, supportive bust features, and high-quality fabrics, you can enjoy your time in the water feeling great all day long.

 

Read More

How to share a bed comfortably with a pregnancy pillow AND your partner

Not all pregnancy pillows are bulky. A modular, three-piece design supports your bump and back while fitting neatly alongside your usual head pillow. This keeps your familiar sleep setup intact and your partner’s space respected.

Adjust your pillow pieces to suit new aches or temperature changes. For example, move the wedge closer to your ribs or switch to moisture-wicking pajamas to stay cool. Partners can help by asking which side feels best, assisting with pillow adjustments, and trying cuddle positions that support alignment and closeness.

Keeping Cool in Bed for Two During Pregnancy

Pregnancy raises your internal temperature, making shared sleep challenging due to hormones, increased circulation, and night sweats. Using breathable mattress toppers like perforated latex and natural sheets such as percale cotton or bamboo helps reduce heat buildup. Downsizing your doona tog or using dual bedding can minimize heat sharing.

Moisture-wicking, stretchy maternity pajamas—like Sleepybelly’s bamboo/cotton/elastane sets—offer comfort and easy breastfeeding access while keeping you cool. A modular, breathable pregnancy pillow with a slim wedge under the bump supports airflow and reduces pressure.

Partner-friendly cooling tips include using a fan angled low across the bed, layered bedding for individual temperature control, and cuddling around pillow support to reduce skin-to-skin heat. Night routines with lukewarm showers, light snacks, hydration, and room ventilation further promote cooler sleep.

A 10-Minute Evening Unwind while Pregnant

Nurturing the body and mind is essential during pregnancy. These simple, supported positions create a beautiful opportunity to connect with your breath and release physical and mental tension. This 10-minute ritual is a perfect act of self-care that promotes deep rest and helps you attune to your body's needs.

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