'Smart casual' is a phrase that many (rightfully) fear. If you're stuck for ideas on what to wear to such an event, take some tips from Eddie Redmayne.
What's right with this look? let's start from the top.
Undoing the second button on a shirt can go either way. One button too many and you're impersonating a sleazy cruise ship singer - Redmayne's is just the right amount.
Usually we'd advise against the collar pop on a blazer but if it looks good, why not?
And the pocket square is a great finishing touch. A pair of slim chinos keep it casual while the shoes let everyone know you haven't been lazy. All in all, simple but effective.