Brand size guide
SIRRI boys' suit sizes
SIRRI's published boys' size chart in cm, dated and sourced, plus every SIRRI suit we compare, with dated prices.
Find his sizeSIRRI size chart
| Size | Fits height up to | Chest | Waist |
|---|---|---|---|
| 6–12 mths | 80 cm | 50 cm | 49 cm |
| 12–18 mths | 86 cm | 51 cm | 50 cm |
| 18–24 mths | 92 cm | 52 cm | 51 cm |
| 2–3 yrs | 98 cm | 54 cm | 52 cm |
| 3–4 yrs | 104 cm | 56 cm | 54 cm |
| 5–6 yrs | 116 cm | 60 cm | 56 cm |
| 7–8 yrs | 128 cm | 65 cm | 58 cm |
| 9–10 yrs | 140 cm | 70 cm | 62 cm |
| 11–12 yrs | 152 cm | 76 cm | 67 cm |
Page-boy sets are cut to sit over a shirt and waistcoat. Check the full set before sizing up.
SIRRI suits compared
| Suit | Fits height | Price | Checked | Where to buy |
|---|---|---|---|---|
| Blue Wedding Four-Piece SIRRI, jacket + trousers + waistcoat + tie | 92–110 cm | £45 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Cream Eid Suit Set SIRRI, jacket + trousers + waistcoat | 98–116 cm | £49 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Navy Eid Suit Set SIRRI, jacket + trousers + waistcoat | 116–134 cm | £49 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Grey Check Five-Piece SIRRI, jacket + trousers + waistcoat + shirt + tie | 110–122 cm | £55 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Navy Page Boy Eight-Piece Set SIRRI, jacket + trousers + waistcoat + shirt + tie + bow-tie | 86–104 cm | £59 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Black Slim Prom Suit SIRRI, jacket + trousers , slim fit | 158–176 cm | £79 est. | Checked 10 Nov 2026 | Check price at SIRRI (opens in a new tab) |
| Grey Three-Piece Set SIRRI, jacket + trousers + waistcoat Marketplace listing, confirm the seller at checkout. | 110–128 cm | £38 est. | Checked 10 Nov 2026 | Check price at Amazon UK (opens in a new tab) |
| Navy Five-Piece Page Boy Set SIRRI, jacket + trousers + waistcoat + shirt + tie Marketplace listing, confirm the seller at checkout. | 98–122 cm | £42 est. | Checked 10 Nov 2026 | Check price at Amazon UK (opens in a new tab) |
-
Blue Wedding Four-Piece
SIRRI, jacket + trousers + waistcoat + tie
£45 est. 92–110 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Cream Eid Suit Set
SIRRI, jacket + trousers + waistcoat
£49 est. 98–116 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Navy Eid Suit Set
SIRRI, jacket + trousers + waistcoat
£49 est. 116–134 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Grey Check Five-Piece
SIRRI, jacket + trousers + waistcoat + shirt + tie
£55 est. 110–122 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Navy Page Boy Eight-Piece Set
SIRRI, jacket + trousers + waistcoat + shirt + tie + bow-tie
£59 est. 86–104 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Black Slim Prom Suit
SIRRI, jacket + trousers , slim fit
£79 est. 158–176 cm Checked 10 Nov 2026Check price at SIRRI (opens in a new tab) -
Grey Three-Piece Set
SIRRI, jacket + trousers + waistcoat
Marketplace listing, confirm the seller at checkout.
£38 est. 110–128 cm Checked 10 Nov 2026Check price at Amazon UK (opens in a new tab) -
Navy Five-Piece Page Boy Set
SIRRI, jacket + trousers + waistcoat + shirt + tie
Marketplace listing, confirm the seller at checkout.
£42 est. 98–122 cm Checked 10 Nov 2026Check price at Amazon UK (opens in a new tab)
est. = guide price from the retailer's listing, not a live price. "Checked" shows when we last saw the price at the retailer.