Size guide
Boys' suits for ages 15–16
Suits whose size range covers 170–182 cm, roughly ages 15 to 16. Height matters more than age: check his measurement against the calculator first.
Find his size| Suit | Fits height | Price | Checked | Where to buy |
|---|---|---|---|---|
| Black Slim Prom Suit Marks & Spencer, jacket + trousers , slim fit | 158–176 cm | £69 est. | Checked 10 Nov 2026 | Check price at Marks & Spencer (opens in a new tab) |
| Black Tuxedo Set Next, jacket + trousers + bow-tie , slim fit | 146–170 cm | £75 est. | Checked 10 Nov 2026 | Check price at Next (opens in a new tab) |
| Black Tuxedo Set River Island, jacket + trousers + bow-tie | 152–170 cm | £75 est. | Checked 10 Nov 2026 | Check price at River Island (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) |
| Black Dinner Suit John Lewis, jacket + trousers + bow-tie | 152–170 cm | £95 est. | Checked 10 Nov 2026 | Check price at John Lewis (opens in a new tab) |
| Black Tuxedo Marc Darcy, jacket + trousers + bow-tie | 146–170 cm | £165 est. | Checked 10 Nov 2026 | Check price at Marc Darcy (opens in a new tab) |
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Black Slim Prom Suit
Marks & Spencer, jacket + trousers , slim fit
£69 est. 158–176 cm Checked 10 Nov 2026Check price at Marks & Spencer (opens in a new tab) -
Black Tuxedo Set
Next, jacket + trousers + bow-tie , slim fit
£75 est. 146–170 cm Checked 10 Nov 2026Check price at Next (opens in a new tab) -
Black Tuxedo Set
River Island, jacket + trousers + bow-tie
£75 est. 152–170 cm Checked 10 Nov 2026Check price at River Island (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) -
Black Dinner Suit
John Lewis, jacket + trousers + bow-tie
£95 est. 152–170 cm Checked 10 Nov 2026Check price at John Lewis (opens in a new tab) -
Black Tuxedo
Marc Darcy, jacket + trousers + bow-tie
£165 est. 146–170 cm Checked 10 Nov 2026Check price at Marc Darcy (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.
Sizes are shown as fitted height ranges from each brand's published chart. Between sizes? Take the larger one, he'll grow into it within the season.