be somebody's style

be (not) (one's) style

To be something that one likes or is apt to do. Often used in the negative to convey the opposite. I'm sure Jenna didn't start that rumor about you—that's just not her style.
See also: style

be (not) somebody’s ˈstyle

be (not) the type of thing that somebody enjoys; be (not) the way somebody usually behaves: Classical music’s not my style; I prefer rock.I don’t like living in town much. The country is more my style.I’m sure he didn’t say that; it’s not his style at all. He’s always so polite.
See also: style