Vintage Square-Neck One-Piece Swimsuit – Tummy Control, Ruffle Detail, Full Coverage

Turn heads at the pool or beach with this elegant vintage-inspired square-neck one-piece swimsuit. The flattering square neckline adds a retro, feminine touch, while the built-in tummy control panel smooths and shapes your midsection for a confident, polished silhouette. Delicate ruffle detailing elevates the look from basic to beautiful, and the modest full-coverage cut ensures you feel comfortable and secure all day long. Available in 10 stunning colors and prints, with padded cups (no underwire) for added support and shape.

Vintage square-neck one-piece swimsuit lifestyle photo – tummy control ruffle detail full coverage swimwear

Product Details

Style: Vintage, Square Neck, One-Piece
Sleeve Length: Sleeveless
Fabric: Polyester & Nylon blend (with Polyester lining)
Cup Type: Padded, no underwire
Features: Tummy Control, Ruffle Detail, Full Coverage, Modest
Colors: Black, Army Green Floral, Black & White, Burgundy, Gray Blue, Blue Floral Print, Navy Blue, Peacock Blue, Navy Blue & Pink Floral, Hidden Orchid
Sizes: S, M, L, XL, XXL

Detail view of vintage square-neck one-piece swimsuit – ruffle detail and tummy control panel

Why You'll Love It

The vintage square neckline is universally flattering and on-trend, creating a sophisticated, put-together look that stands out from the crowd. The built-in tummy control panel provides gentle compression and smoothing without sacrificing comfort, so you can focus on enjoying your day. The ruffle detail adds a playful, feminine touch that elevates the overall aesthetic, while the padded cups (no underwire) offer natural-looking shape and support. With 10 color and print options ranging from classic solids to romantic florals, there's a perfect match for every style and occasion.

Customer photos of vintage square-neck one-piece swimsuit – tummy control ruffle detail full coverage swimwear

Color options for vintage square-neck one-piece swimsuit – 10 colors and prints available

US Size Guide

All measurements are in inches. If you're between sizes, size up for a more comfortable fit.

US Size	Bust (in)	Waist (in)	Hips (in)	Cup Size
S (US 4–6)	34.0"–35.5"	27.0"–28.5"	37.0"–38.5"	32B/C, 34B
M (US 8–10)	36.0"–38.0"	29.0"–31.0"	39.0"–41.0"	34C/D, 36B/C
L (US 12–14)	38.5"–40.5"	31.5"–33.5"	41.5"–43.5"	36D, 38C
XL (US 16–18)	41.0"–43.0"	34.0"–36.0"	44.0"–46.0"	38D, 40C
XXL (US 16W–18W)	43.5"–45.5"	36.5"–38.5"	46.5"–48.5"	38DD, 40D/DD

Note: Measurements are approximate. For the best fit, compare with a swimsuit you already own. Cup size guidance is based on standard US bra sizing.

Styling Tips

The vintage square neckline pairs beautifully with high-waisted shorts or a wrap skirt for a beach-to-boardwalk look. Layer with a lightweight kimono or denim jacket for cooler evenings. Choose a classic solid color like black, navy, or burgundy for a timeless, editorial vibe, or go for one of the floral prints for a romantic, resort-ready statement. Complete the look with strappy sandals, a wide-brim hat, and gold jewelry.

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Vintage Square-Neck One-Piece Swimsuit – Tummy Control, Ruffle Detail, Full Coverage