Skip to content
Free UK delivery 10% off your first order Free UK tracked returns Lowest prices guaranteed Worldwide shipping options available Free UK delivery 10% off your first order Free UK tracked returns Lowest prices guaranteed Worldwide shipping options available
NHS & STUDENT DISCOUNT → NHS & STUDENT →

Cart

Your cart is empty

Boys 3-Piece Suits

Shop boys 3-piece suits for weddings, page boys, First Communion, Eid, prom and special events.

Select from classic navy, grey, and black or lighter shades plus tweed, check, and textured styles for a photo-ready finish.

Use filters to shop by size, colour and fit and find the right boys suit for your little one.

Shop by style: Navy 3-Piece Suits | Grey 3-Piece Suits | Black 3-Piece Suits

Sort by

221 products

Boys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - BlackBoys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - Black Model Picture
On saleBoys Piping Tuxedo Suit - 3-Piece or 5-Piece - Black & WhiteBoys Piping Tuxedo Suit - 3-Piece or 5-Piece - Black & White
SIRRI
Boys Piping Tuxedo Suit - 3-Piece or 5-Piece - Black & White Sale priceFrom $73.00 Regular price$130.00
On saleBoys 3-Piece Italian Cut Formal Suit - Royal BlueBoys 3-Piece Italian Cut Formal Suit - Royal Blue
SIRRI
Boys 3-Piece Italian Cut Formal Suit - Royal Blue Sale priceFrom $55.00 Regular price$97.00
On saleBoys Slim Fit Formal Suit - Sebastian Le Blanc - Grey Model PictureBoys Slim Fit Formal Suit - Sebastian Le Blanc - Grey Front Picture
On saleBoys' 3-Piece Tailored Fit Communion White SuitBoys' 3-Piece Tailored Fit Communion White Suit
SIRRI
Boys' 3-Piece Tailored Fit Communion White Suit Sale priceFrom $81.00 Regular price$130.00
On saleBoys’ 3-Piece Pinstripe Double-Breasted Suit - Off-White & Navy model pictureBoys’ 3-Piece Pinstripe Double-Breasted Suit - Off-White & Navy model back picture
On saleBoys 3-Piece Tailored Fit Retro Check Navy Suit - Navy Blue - BrownBoys 3-Piece Tailored Fit Retro Check Navy Suit - Navy Blue - Brown
On saleBoys Tailored Fit Retro Check Navy Suit - 3-Piece or 6-Piece - Navy BlueBoys Tailored Fit Retro Check Navy Suit - 3-Piece or 6-Piece - Navy Blue
On saleBoys 3-Piece Tailored Fit Herringbone Tweed Check Blue Suit - Beau KidBoys 3-Piece Tailored Fit Herringbone Tweed Check Blue Suit - Beau Kid
On saleBoys 3-Piece Windowpane Check Slim Fit Suit - Blue - BlackBoys 3-Piece Windowpane Check Slim Fit Suit - Blue - Black
SIRRI
Boys 3-Piece Windowpane Check Slim Fit Suit - Blue - Black Sale priceFrom $73.00 Regular price$122.00
Sold outSave $48.00Boys  3 Piece Slim Fit Suit with Double Breasted Waistcoat - Alfred BeigeBoys  3 Piece Slim Fit Suit with Double Breasted Waistcoat - Alfred Beige
Boys 3-Piece Glen Check Tweed Formal Suit - Paul Andrew Regent CreamBoys 3-Piece Glen Check Tweed Formal Suit - Paul Andrew Regent Cream
Boys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Slate Grey Model PictureBoys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Slate Grey Model Front Picture
On saleBoys 3-Piece Slim Fit Windowpane Check Suit - BlueBoys 3-Piece Slim Fit Windowpane Check Suit - Blue
SIRRI
Boys 3-Piece Slim Fit Windowpane Check Suit - Blue Sale priceFrom $86.00 Regular price$114.00
On saleBoys Slim Fit Piping Tuxedo Dinner Suit - 3-Piece or 6-Piece - Romano Vianni BlackBoys Slim Fit Piping Tuxedo Dinner Suit - 3-Piece or 6-Piece - Romano Vianni Black
On saleBoys 3-Piece Windowpane Check Slim Fit Suit - Blue - GreyBoys 3-Piece Windowpane Check Slim Fit Suit - Blue - Grey
SIRRI
Boys 3-Piece Windowpane Check Slim Fit Suit - Blue - Grey Sale priceFrom $73.00 Regular price$122.00
Boys 3-Piece Herringbone Windowpane Check Suit - Paul Andrew Harris BrownBoys 3-Piece Herringbone Windowpane Check Suit - Paul Andrew Harris Brown
On saleBoys’ 3-Piece Blue Textured Suit with Double Breasted Waistcoat Model PictureBoys’ 3-Piece Blue Textured Suit with Double Breasted Waistcoat Model Back Picture
On saleBoys’ 3-Piece Slim Fit Smart Casual Suit - Gofre - Navy Model PictureBoys’ 3-Piece Slim Fit Smart Casual Suit - Gofre - Navy Model Front Picture
SIRRI
Boys’ 3-Piece Slim Fit Smart Casual Suit - Gofre - Navy Sale priceFrom $49.00 Regular price$110.00
Boys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Sage Green Model PictureBoys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Sage Green Model Front Picture
On saleBoys 3-Piece Slim Fit Windowpane Check Suit - Dark GreenBoys 3-Piece Slim Fit Windowpane Check Suit - Dark Green
SIRRI
Boys 3-Piece Slim Fit Windowpane Check Suit - Dark Green Sale priceFrom $86.00 Regular price$114.00
Boys Linen Wedding Suit with Elbow Patches - 3-Piece or 6-Piece - Romano Vianni WhiteBoys Linen Wedding Suit with Elbow Patches - 3-Piece or 6-Piece - Romano Vianni White
On saleBoys Slim Fit Formal Suit - Sebastian Le Blanc - Navy Blue Model PictureBoys Slim Fit Formal Suit - Sebastian Le Blanc - Navy Blue Back Picture
Save $40.00Boys Navy Blue 3-Piece Formal Suit Front PictureBoys Navy Blue 3-Piece Formal Suit
SIRRI
Boys Navy Blue 3-Piece Formal Suit Sale price$65.00 Regular price$105.00
On saleBoys’ 3-Piece Pinstripe Double-Breasted Suit - Light Beige & Grey Front PictureBoys’ 3-Piece Pinstripe Double-Breasted Suit - Light Beige & Grey Back Picture
On saleBoys 3-Piece Slim Fit Windowpane Check Suit - GreyBoys 3-Piece Slim Fit Windowpane Check Suit - Grey
SIRRI
Boys 3-Piece Slim Fit Windowpane Check Suit - Grey Sale priceFrom $86.00 Regular price$114.00
On saleBoys Piping Tuxedo Suit - 3-Piece or 5-Piece - Dark Blue & WhiteBoys Piping Tuxedo Suit - 3-Piece or 5-Piece - Dark Blue & White
Save $48.00Boys Formal Suit Set - 3-Piece or 5-Piece - IvoryBoys Formal Suit Set - 3-Piece or 5-Piece - Ivory
SIRRI
Boys Formal Suit Set - 3-Piece or 5-Piece - Ivory Sale priceFrom $57.00 Regular price$105.00
On saleBoys Linen Suit with Elbow Patches - 3-Piece or 6-Piece -  Romano Vianni Blue RedBoys Linen Suit with Elbow Patches - 3-Piece or 6-Piece -  Romano Vianni Blue Red
On saleBoys 3-Piece Slim Fit Piping Velvet Tuxedo Suit - LONDON - RedBoys 3-Piece Slim Fit Piping Velvet Tuxedo Suit - LONDON - Red
On saleBoys’ 3-Piece Pinstripe Double-Breasted Suit - Beige & BrownBoys’ 3-Piece Pinstripe Double-Breasted Suit - Beige & Brown
Boys Premium Twill 3-Piece Suit - Cavani Donatella Sage GreenBoys Premium Twill 3-Piece Suit - Cavani Donatella Sage Green
Boys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - GreenBoys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - Green Model Picture
Boys' Velvet Suit with Satin Shawl Lapels - EC103 - Royal Blue Model PictureBoys' Velvet Suit with Satin Shawl Lapels - EC103 - Royal Blue Back Picture
On saleBoys 3-Piece Retro Check Slim Fit Formal Suit - GreyBoys 3-Piece Retro Check Slim Fit Formal Suit - Grey
SIRRI
Boys 3-Piece Retro Check Slim Fit Formal Suit - Grey Sale priceFrom $76.00 Regular price$112.00
Save $40.00Boys Formal Suit Set - 3-Piece & 5-Piece - Saks BlueBoys Formal Suit Set - 3-Piece & 5-Piece - Saks Blue
SIRRI
Boys Formal Suit Set - 3-Piece & 5-Piece - Saks Blue Sale price$65.00 Regular price$105.00

Boys 3-Piece Suits: Jacket, Waistcoat & Trousers Sets for Weddings & Occasions

Shop Sirri’s boys 3-piece suits — smart jacket, waistcoat and trousers sets made for weddings, page boy duties, First Communion, graduations, Eid, family celebrations and formal events. Looking for more styles and fits? Browse the full range in Boys Suits.

Need quick help choosing? Jump to Boys 3-Piece Suits FAQs.

What’s Included in a Boys 3-Piece Suit?

  • Suit jacket for a sharp, tailored finish
  • Matching waistcoat for a classic formal look
  • Trousers to complete the 3-piece set

Style tip: a 3-piece suit is perfect if you want to mix-and-match your own shirt and accessories for different events.

Best Occasions for Boys 3-Piece Suits

  • Weddings & page boy outfits: coordinate with the wedding theme and accessories
  • Communion & ceremonies: classic, photo-ready formalwear
  • Prom, graduations & family celebrations: a smart look that feels grown-up

Shopping for a specific event? Explore Page Boy Suits, Boys Communion Suits, or go extra formal with Boys Tuxedos.

Complete the Look: Shirts, Ties, Shoes & Finishing Touches

Prefer an all-in-one outfit with the shirt and tie included? Shop Boys 5-Piece Suits. Or browse all styles in Boys Suits.

Boys 3-Piece Suits FAQs

What is a boys 3-piece suit?

A boys 3-piece suit is a coordinated set with a jacket, waistcoat and trousers. It’s a classic choice for weddings, ceremonies and formal events.

Does a 3-piece suit include a shirt and tie?

Usually no — 3-piece suits focus on the jacket/waistcoat/trousers. To finish the look, add a formal shirt and tie (or bow tie).

Should I choose a 3-piece or a 5-piece suit?

Choose a 3-piece suit if you want flexibility to style it with different shirts and accessories. Choose a 5-piece suit if you want the convenience of a full set.

What shoes go best with a boys 3-piece suit?

For the smartest finish, choose brogues or Oxford shoes. For a dressy slip-on, try boys loafers.