What should I wear to an assessment centre?
Just like any interview or career event, before you go it is important to make sure you know the dress code. If you are unsure then contact the recruiters or look through the dress code of the company. You should always remain on the side of professionalism - a.k.a. no ripped jeans, no scruffy trainers, even if they are black, and definitely no trackies (regardless of how comfortable they are).
Here are some articles to help you work out what is acceptable and what is not;