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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

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221 products

Boys 3-Piece Slim Fit Formal Blue Suit - Romano Vianni BlueBoys 3-Piece Slim Fit Formal Blue Suit - Romano Vianni Blue
Boys 3-Piece Tweed Glen Check Slim Fit Suit - Cavani CARIDI Navy BlueBoys 3-Piece Tweed Glen Check Slim Fit Suit - Cavani CARIDI Navy Blue
On saleBoys 3-Piece Tweed Tailored Fit Formal Suit - Paul Andrew Ralph BeigeBoys 3-Piece Tweed Tailored Fit Formal Suit - Paul Andrew Ralph Beige
On saleBoys 3-Piece Tweed Windowpane Check Slim Fit Suit - Cavani SHELBY Navy BlueBoys 3-Piece Tweed Windowpane Check Slim Fit Suit - Cavani SHELBY Navy Blue
On saleBoys 3-Piece Windowpane Check Slim Fit Suit - Peach - Navy BlueBoys 3-Piece Windowpane Check Slim Fit Suit - Peach - Navy Blue
Boys' Velvet Suit with Satin Shawl Lapels - EC103 - Burgundy Model Front PictureBoys' Velvet Suit with Satin Shawl Lapels - EC103 - Burgundy Model Back Picture
On saleBoys Solid Tailored Fit Communion Suit Set - 3-Piece or 6-Piece - Light BlueBoys Solid Tailored Fit Communion Suit Set - 3-Piece or 6-Piece - Light Blue
On saleBoys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - BlackBoys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - Black
SIRRI
Boys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - Black Sale priceFrom £39.97 Regular price£79.99
Save £25.00Boys 3-Piece & 5-Piece Formal Suit Set - Navy BlueBoys 3-Piece & 5-Piece Formal Suit Set - Navy Blue
SIRRI
Boys 3-Piece & 5-Piece Formal Suit Set - Navy Blue Sale price£39.99 Regular price£64.99
On saleBoys’ 3-Piece Pinstripe Double-Breasted Suit - Cream & Beige Front PictureBoys’ 3-Piece Pinstripe Double-Breasted Suit - Cream & Beige Back Picture
SIRRI
Boys’ 3-Piece Pinstripe Double-Breasted Suit - Cream & Beige Sale priceFrom £49.97 Regular price£59.97
Boys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Sky Blue Front PictureBoys’ 3-Piece Slim Fit Textured Formal Suit - Tropez - Sky Blue Model Front Picture
On saleBoys 3-Piece Polka Dot Slim Fit Suit - ARISTOTLE - Navy BlueBoys 3-Piece Polka Dot Slim Fit Suit - ARISTOTLE - Navy Blue
SIRRI
Boys 3-Piece Polka Dot Slim Fit Suit - ARISTOTLE - Navy Blue Sale priceFrom £67.97 Regular price£84.99
On saleBoys 3-Piece Velvet Trim Black Formal Suit - Romano Vianni BlackBoys 3-Piece Velvet Trim Black Formal Suit - Romano Vianni Black
Save £103.02Boys 3-Piece Denim Look Slim Fit Formal Suit - Cavani STEELE Steel BlueBoys 3-Piece Denim Look Slim Fit Formal Suit - Cavani STEELE Steel Blue
On saleBoys 3-Piece Slim Fit Piping Velvet Tuxedo Suit - LONDON - BlackBoys 3-Piece Slim Fit Piping Velvet Tuxedo Suit - LONDON - Black
On saleBoys 3-Piece Tailored Fit Charcoal Grey Check Suit - Charcoal GreyBoys 3-Piece Tailored Fit Charcoal Grey Check Suit - Charcoal Grey
Boys Double-Breasted Pinstripe Suit - 3-Piece & 6-Piece Set - Sky BlueBoys Double-Breasted Pinstripe Suit - 3-Piece & 6-Piece Set - Sky Blue
On saleBoys 3-Piece Tailored Fit Sheen Effect Blue Suit - Paul Andrew KINGSLEY Royal BlueBoys 3-Piece Tailored Fit Sheen Effect Blue Suit - Paul Andrew KINGSLEY Royal Blue
Boys 3-Piece Velvet Damask Tuxedo Suit - Marc Navy Model PictureBoys 3-Piece Velvet Damask Tuxedo Suit - Marc Navy Front Picture
Boys’ 3-Piece Beige Cotton Microcheck Suit - Hampton  Model PictureBoys’ 3-Piece Beige Cotton Microcheck Suit - Hampton  Model Front Picture
Boys’ 3-Piece Windowpane Check Suit - Cavani Torino Navy BlueBoys’ 3-Piece Windowpane Check Suit - Cavani Torino Navy Blue
On saleBoys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - BurgundyBoys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - Burgundy
SIRRI
Boys 3-Piece Velvet Slim Fit Tuxedo Dinner Suit - Burgundy Sale priceFrom £39.97 Regular price£79.97
On saleBoys 3-Piece Patterned Navy Suit - Romano Vianni Navy BlueBoys 3-Piece Patterned Navy Suit - Romano Vianni Navy Blue
On saleBoys 3-Piece Plaid Check Slim Fit Suit - Beige - Navy BlueBoys 3-Piece Plaid Check Slim Fit Suit - Beige - Navy Blue
SIRRI
Boys 3-Piece Plaid Check Slim Fit Suit - Beige - Navy Blue Sale priceFrom £39.97 Regular price£74.99
On saleBoys Slim Fit Formal Suit - Navy Blue Model PictureBoys 3-Piece Slim Fit Formal Suit - Navy Blue
SIRRI
Boys 3-Piece Slim Fit Formal Suit - Navy Blue Sale priceFrom £43.97 Regular price£69.99
Boys Tailored Fit Black Suit - 3-Piece or 6-Piece - Paul Andrew PARKER BlackBoys Tailored Fit Black Suit - 3-Piece or 6-Piece - Paul Andrew PARKER Black
On saleBoys 3-Piece Tweed Tailored Fit Formal Suit - Paul Andrew Ralph CreamBoys 3-Piece Tweed Tailored Fit Formal Suit - Paul Andrew Ralph Cream
On saleBoys 3-Piece Windowpane Check Slim Fit Suit - BlueBoys 3-Piece Windowpane Check Slim Fit Suit - Blue
SIRRI
Boys 3-Piece Windowpane Check Slim Fit Suit - Blue Sale priceFrom £44.97 Regular price£74.99
On saleBoys 3-Piece Linen Casual Suit with T-Shirt - Keten - Cream Model Picture
 Boys 3-Piece Linen Casual Suit with T-Shirt - Keten - Cream Model  Front Picture
SIRRI
Boys 3-Piece Linen Casual Suit with T-Shirt - Keten - Cream Sale priceFrom £49.97 Regular price£60.97
On saleBoys 3-Piece Windowpane Check Slim Fit Suit Set Model PictureBoys 3-Piece Windowpane Check Slim Fit Suit Set Back Picture
SIRRI
Boys 3-Piece Windowpane Check Slim Fit Suit Set Sale priceFrom £57.97 Regular price£74.99
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On saleBoys 3-Piece Polka Dot Slim Fit Black Suit - Avagadro - BlackBoys 3-Piece Polka Dot Slim Fit Black Suit - Avagadro - Black
SIRRI
Boys 3-Piece Polka Dot Slim Fit Black Suit - Avagadro - Black Sale priceFrom £67.97 Regular price£84.99
On saleBoys 3-Piece Slim Fit Black Suit - Alvarez - BlackBoys 3-Piece Slim Fit Black Suit - Alvarez - Black
SIRRI
Boys 3-Piece Slim Fit Black Suit - Alvarez - Black Sale priceFrom £45.97 Regular price£59.99
On saleBoys Tailored Fit Sheen Effect Purple Suit Set - SAMUEL - Tonic Purple Front PictureBoys Tailored Fit Sheen Effect Purple Suit Set - SAMUEL - Tonic Purple Model Picture
On saleBoys 3-Piece Windowpane Check Tweed Tailored Fit Suit - BlueBoys 3-Piece Windowpane Check Tweed Tailored Fit Suit - Blue
SIRRI
Boys 3-Piece Windowpane Check Tweed Tailored Fit Suit - Blue Sale priceFrom £39.97 Regular price£59.99
Boys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - PurpleBoys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - Purple model picture
Boys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - Navy BlueBoys Slim Fit Velvet Dinner Suit - 3-Piece & 5-Piece - SAVOY  - Navy Blue back picture

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.