Looks are not important for an actor, so much as they are important to get cast in projects that pay what film, tv and professional theater do. Most people look neither here nor there on film, but casting agents want either a “here” or a “there”. This means people with the looks for either a character or leading role.
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.