Looking presentable, I strongly believe, is something you do every day. Every day you show up at work, you dress appropriately for work. Not just on that first interview. Why? Because work matters to you. Why not be like that in your own personal life? Don't we matter?
Does it mean that jeans and t-shirts are out? Or that we have to wear make-up every day? Of course not. Dress according to the occasion, and whatever you wear make sure clothes fit you, are clean, and you smell nice.
Be yourself, but aim to be the best version of yourself!