Build a bear workshop group interview?

You can never overdress for an interview and if you want them to know you are serious, then you need to wear professional clothing. It's basically very simple. Age doesn't change what's appropriate. If you wear leggings or skinny jeans, you are telling them you don't respect the job. If you wear a blazer, blouse, long floor-sweeping flare dress pants and tall heels, you are telling them you care. It's up to you. You need full makeup, hair pulled back, and polished nails.

Smart shirt and black trousers will do the trick, it's best to be too smart than not smart enough.