What is teddy underwear?
Teddy underwear — is a one-piece piece of women's underwear that visually and structurally combines a top (bra or camisole) and panties.
The term originated in the 1910s and 1920s, when women were abandoning rigid corsets in favor of looser clothing. The invention is attributed to Theodore (Teddy) Campion, who first proposed pairing a lightweight chemise with drawers.

The main difference between a teddy and a bodysuit is their fit and intended use. A bodysuit is tight-fitting, made of stretchy materials, and is often worn as an everyday item. A teddy, on the other hand, is looser, made of delicate fabrics (silk, lace, chiffon), and is considered exclusively intimate wear or sleepwear.
Main types
Classic and romantic styles are made from smooth silk or satin. They feature a loose silhouette, often complemented by shorts instead of classic briefs, thin straps, and delicate lace trim along the edges.

Boudoir teddies are made from translucent mesh or solid lace. They feature a deep V-neckline, an open back, multiple decorative straps, and sculpted side cutouts.
Vintage style is represented by low-waisted styles reminiscent of the 1920s or high-cut thighs, evoking the aesthetics of the 1980s. These pieces are often embellished with ruffles or textured cord lace.
What to combine with
As loungewear for sleeping and lounging, teddies are traditionally paired with a long silk robe or a lightweight kimono in a matching color. The smooth textures of the fabrics ensure comfort and allow unrestricted movement.

To create boudoir looks, lace models are combined with stockings, if the design includes fastenings for them, or with a long, transparent negligee.

In modern eveningwear, thick lace teddies are integrated into outerwear, similar to bodysuits. They're worn under an unbuttoned oversized jacket, a tailored tuxedo, or a sheer blouse paired with high-waisted trousers, leaving the scalloped edge visible at the neckline.