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 3-Piece Retro Check Slim Fit Suit - Light BlueBoys 3-Piece Retro Check Slim Fit Suit - Light Blue
On saleBoys Linen White Communion Suit - 3-Piece or 5-Piece - Beau Kid RIO WhiteBoys Linen White Communion Suit - 3-Piece or 5-Piece - Beau Kid RIO White
Boys 3-Piece Windowpane Check Woven Effect Navy Suit Set - Romano Vianni Navy BlueBoys 3-Piece Windowpane Check Woven Effect Navy Suit Set - Romano Vianni Navy Blue
On saleBoys 3-Piece Charcoal Grey Suit - ANDREA - Charcoal GreyBoys 3-Piece Charcoal Grey Suit - ANDREA - Charcoal Grey
Save $40.00Boys 3-Piece Formal Suit Set - GreyBoys 3-Piece Formal Suit Set - Grey
SIRRI
Boys 3-Piece Formal Suit Set - Grey Sale price$65.00 Regular price$105.00
Sold outOn saleBoys 3-Piece Slim Fit Suit - Robert Simon JACK BlackBoys 3-Piece Slim Fit Suit - Robert Simon JACK Black
Robert Simon
Boys 3-Piece Slim Fit Suit - Robert Simon JACK Black Sale priceFrom $57.00 Regular price$177.00
On saleBoys 3-Piece Italian Slim Fit Polka Dot Navy Suit - Romano Vianni Navy BlueBoys 3-Piece Italian Slim Fit Polka Dot Navy Suit - Romano Vianni Navy Blue
On saleBoys Tailored Fit Black Suit - 3-Piece or 6-Piece - Paul Andrew PARKER Light GreyBoys Tailored Fit Black Suit - 3-Piece or 6-Piece - Paul Andrew PARKER Light Grey
Sold outSave $57.00Boys 3-Piece Tailored Fit Herringbone Patterned Suit - TONY - Dark BlueBoys 3-Piece Tailored Fit Herringbone Patterned Suit - TONY - Dark Blue
On saleBoys 3-Piece Tailored Fit Retro Check Suit - Robert Simon ANTHONY NAVYBoys 3-Piece Tailored Fit Retro Check Suit - Robert Simon ANTHONY NAVY
On saleBoys 3-Piece Twill Blue Self-Pattern Suit - Romano Vianni BlueBoys 3-Piece Twill Blue Self-Pattern Suit - Romano Vianni Blue
Save $64.00Boys Wedding Silver Suit Set - Dark Silver Model PictureBoys Wedding Silver Suit Set - Dark Silver Front Picture
SIRRI
Boys 3-Piece Wedding Silver Suit Set - Dark Silver Sale price$41.00 Regular price$105.00
Sold outOn saleBoys Retro Windowpane Tailored Fit Check Suit - 3-Piece or 6-Piece - Navy BlueBoys Retro Windowpane Tailored Fit Check Suit - 3-Piece or 6-Piece - Navy Blue
Boys 3-Piece Tweed Herringbone Suit - Paul Andrew Scott Navy Front PictureBoys 3-Piece Tweed Herringbone Suit - Paul Andrew Scott Navy Model Front Picture
On saleBoys Quilted Dotted Black Tuxedo Suit - 3-Piece or 6-Piece - Romano VianniBoys Quilted Dotted Black Tuxedo Suit - 3-Piece or 6-Piece - Romano Vianni
Boys Slim Fit Wool Blend Herringbone Tweed Blue Suit - CARNEGI NAVYBoys Slim Fit Wool Blend Herringbone Tweed Blue Suit - CARNEGI NAVY Model Picture
Save $48.00Boys 3 Piece Slim Fit Suit Set - Formal Wedding Suit - Oliver GreyBoys 3 Piece Slim Fit Suit Set - Formal Wedding Suit - Oliver Grey
Save $7.00Boys Black 3-Piece Formal Suit Set with Trousers & Bow TieBoys Black 3-Piece Formal Suit Set with Trousers & Bow Tie
Boys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Savoy GreyBoys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Savoy Grey
Boys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Pearl GreyBoys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Pearl Grey
Boys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Lush GreenBoys 3-Piece Wool Herringbone Tweed Suit - Cavani Thomas Lush Green
Boys’ 3-Piece Textured Suit - Cavani Camden BeigeBoys’ 3-Piece Textured Suit - Cavani Camden Beige
Boys Formal Suit with Patterned Waistcoat and Cravat Set - Antonio - Black - BlueBoys Formal Suit with Patterned Waistcoat and Cravat Set - Antonio - Black - Blue
Boys Formal Suit with Patterned Waistcoat and Cravat Set - Antonio - Black - PinkBoys Formal Suit with Patterned Waistcoat and Cravat Set - Antonio - Black - Pink
On saleBoys Slim Fit Piping Tuxedo Dinner Suit - Romano Vianni Tonic BlueBoys Slim Fit Piping Tuxedo Dinner Suit - Romano Vianni Tonic Blue
Boys Navy Blue Retro Check Suit - Navy BlueBoys Navy Blue Retro Check Suit - Navy Blue
On saleBoys Piping Textured Suit - 3-Piece or 5-Piece - MATTEO - BurgundyBoys Piping Textured Suit - 3-Piece or 5-Piece - MATTEO - Burgundy
On saleBoys Quilted Dotted Navy Tuxedo Suit - Romano VianniBoys Quilted Dotted Navy Tuxedo Suit - Romano Vianni
On saleBoys Tuxedo Suit - Corduroy Velvet Waistcoat & shawl lapel - White- Navy Blue Front Open PictureBoys Tuxedo Suit - Corduroy Velvet Waistcoat & shawl lapel - White- Navy Blue Back Picture
On saleBoys Windowpane Tailored Fit Suit-  Paul Andrew HARVEY Navy BlueBoys Windowpane Tailored Fit Suit-  Paul Andrew HARVEY Navy Blue
On saleBoys Exclusive Check Tweed Blue Suit - Romano Vianni BlueBoys Exclusive Check Tweed Blue Suit - Romano Vianni Blue
On saleBoys Windowpane Check Charcoal Grey Suit Set - Romano Vianni Charcoal GreyBoys Windowpane Check Charcoal Grey Suit Set - Romano Vianni Charcoal Grey
On saleBoys Tailored Fit Tweed Check Navy Suit - SHELBY - Navy BlueBoys Tailored Fit Tweed Check Navy Suit - SHELBY - Navy Blue
SIRRI
Boys Tailored Fit Tweed Check Navy Suit - SHELBY - Navy Blue Sale priceFrom $78.00 Regular price$146.00
Boys Formal Suit with Patterned Waistcoat and Cravat Set - Black and Gold Model PictureBoys Formal Suit with Patterned Waistcoat and Cravat Set - Black and Gold
Boys 3-Piece Cotton Seersucker Double Breasted Suit - BeigeBoys 3-Piece Cotton Seersucker Double Breasted Suit - Beige
Boys 3-Piece Cotton Seersucker Double Breasted Suit - GreyBoys 3-Piece Cotton Seersucker Double Breasted Suit - Grey

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.