Something that's becoming is charming, or looks good. It's a compliment — or a sales tactic — if a salesperson gushes, "That dress is so becoming on you!" Clothing that's becoming is well-suited to the person wearing it, flattering him and making him look great.

What does it mean when someone says you are becoming?

: causing someone to look attractive : having a flattering or attractive effect. : suitable or appropriate for a particular person or in a certain situation.

What is meant by the process of becoming?

In philosophy, becoming is the possibility of change in a thing that has being, that exists.