Depends on what you want. NYC is it for theatre acting, TV, and some movies. LA is mostly for movies and TV, partly because they have the space for huge sound stages. Also, in theatre, you act your role from start to finish in more or less one go.
Can I wear jeans to an audition?
You don’t need to dress like you’re going in for a corporate interview here. Your clothes shouldn’t be a wrinkled mess, but you also shouldn’t be wearing business attire to an audition. A good pair of jeans can go a long way, and it’s worth investing in a pair for auditions alone.