Let's get straight to it — here's what actually matters on this one.

• A well-fitted, breathable dress shirt in cotton poplin is the safest, most universally appropriate interview choice.
• Avoid brand-new stiff formalwear for interview day — wash or wear a new shirt at least once beforehand so it doesn't feel or look unnaturally stiff.
• Correct fit reduces the physical distractions (tugging at a collar, adjusting a waistband) that can visibly signal nervousness.
• Choose fabric weight for the room temperature you'll actually be in, not just the season outside — most interviews happen indoors, air-conditioned.

The fit-and-fabric-health takeaway: Physical comfort directly affects how composed you appear — an ill-fitting or scratchy fabric adds a distraction you don't need under interview pressure.

Next up: check out our guide on how to wash cotton shirts without ruining the fit.