How do you picture a girl with the name Brianna?

I like the name Brianna it's a very pretty name. But I'm surpirsed to see how many people feel the same way as I do with people named Brianna! I know one & she acts nice to your face but is kinda fake, people would say snobby, & not someone you can trust. I'm sure not all Brianna are that way, but the Brianna I know is.