1. You’re a star – used to praise someone’s efforts.
2. You can be star struck – fascinated by famous people.
3. You can reach for the stars – see no limit to your ambitions.
4. You may be starry-eyed – naively optimistic or idealistic.
5. If you are seeing stars – this is a bas thing because it means you were hit and feel light-headed.
6. And of course, a film star – but interestingly we can use it as a verb and say that e.g Daniel Craig stars in the new James Bond film.
English (UK) 
Polski