Tinie Tempah has proved again and again that he knows his way around a decent outfit. Whether going smart/casual or black tie, the man always hits his mark. And he's done it again, arriving at the launch for a new Audemars Piguet watch in a smashing navy blue suit and scoop-neck T-shirt combo, which he accessorised with smart glasses and a massive grin.

Wearing a T-shirt with a suit is perfectly acceptable, especially if it's a more relaxed formal environment – think engagement parties, big birthdays, work summer bashes – but you need to take your cues from the colour of the suit. Light blues or pastels need a crisp white tee, while Tinie gets it right here with a two-tone black number that complements his suit's deep blue hue.