How to fix a swimsuit that is too big in the bottoms

How to Fix a Swimsuit That is Too Big in the Bottoms

Practical solutions for the common "saggy rear" problem in one-pieces and bikinis.

Can you fix saggy swimsuit bottoms?

Yes, you can fix a swimsuit that is too big in the bottoms by using temporary hacks like side-tying or strap-tightening, or permanent solutions like adding elastic or darting the fabric. If your one-piece fits your torso but sags at the rear, it is usually due to a "short torso" fit on a standard-length suit or the loss of elastic memory in the fabric.

3 Ways to Fix a Saggy Swimsuit Bottom

1. The "Safety Pin & Tuck" (Temporary Fix)

If you’re at the beach and notice your suit is drooping, turn the garment inside out. Gather 1-2cm of excess fabric at the side seams (near the hip) and secure it with a small, stainless steel safety pin. This pulls the fabric taut across the seat without affecting the front view.

2. Tighten the Shoulder Straps

Often, "bottom sag" in a one-piece isn't caused by the seat being too big, but by the torso being too long. If your suit has adjustable straps, shortening them will pull the entire suit upward, smoothing out the excess fabric at the rear.
Check out our adjustable one-piece collection for better fit control.

3. Add Elastic to the Leg Opening (Permanent Fix)

If you have basic sewing skills, you can thread a piece of 1/4-inch swimwear elastic through the existing hem of the leg opening. By slightly shortening the elastic, you create a "grip" that keeps the fabric against your skin, preventing the dreaded "water-weight" sag.

Why is your swimsuit sagging?

Before you reach for the needle and thread, identify the cause:

  • Fabric Fatigue: If your suit is old, the Lycra has likely "snapped." This cannot be fixed and requires an upgrade to chlorine-resistant fabric.
  • Incorrect Sizing: You may have a "pear" or "apple" shape that requires mixing and matching sizes.
  • The "Wet Stretch": All swimwear expands when wet. If it feels "comfortable" when dry, it is likely one size too big.

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