3-piece suits $178
Suit Archive

Style · 1 min read

What Is a Three-Piece Suit? Waistcoat vs Vest Explained

By The Suit Archive team · Published 11 October 2026 · Last updated 11 October 2026

London: Charcoal 3-piece suit at Suit Archive Singapore

Quick answer

A three-piece suit is a matching jacket, waistcoat and trousers. A waistcoat is the British term for the sleeveless buttoned garment worn under the jacket; Americans usually call it a vest. At Suit Archive, a complete three-piece suit is $178.

Key takeaways

  • ✓Three-piece = jacket + waistcoat + trousers.
  • ✓Waistcoat and vest mean the same here.
  • ✓The waistcoat adds formality.
  • ✓$178 for the complete set.

The Basics

Terms
TermMeaning
Three-piece suitJacket, waistcoat and trousers
Two-piece suitJacket and trousers
WaistcoatBritish word for the sleeveless garment under the jacket
VestAmerican word for the same garment

Why Wear a Waistcoat

It adds formality, hides the waistband and gives a clean line. In heat, wear it without the jacket.

Get a Complete Three-Piece Suit

Jacket, waistcoat and trousers for $178. Suit Archive's studio is at 12 Lorong Bakar Batu #06-07, Singapore 348745, open Monday to Friday, 11am to 11pm, by appointment. Every complete 3-piece suit is $178. Book online or WhatsApp us at (65) 8979 1210.

Try it on before you buy. Book a Suit Archive fitting and walk out in a suit that fits.

Frequently asked questions

What is a three-piece suit?

A matching jacket, waistcoat and trousers.

Is a vest the same as a waistcoat?

In this context, yes: waistcoat is the British term, vest the American.

Is a 3-piece suit formal?

It is among the more formal suit options.

Book a FittingWhatsApp