Top Definition
A word used to describe a group of girls (or girl)who dress the same almost like clones. These girls call each other to plan what they're going to wear they day before.
Gianna Brianna 1: Hey what Hollister shirt should we where tomorow?
Gianna Brianna 2: I think we should all wear our pink ones.
Gianna Brianna 1: OK I'll tell Gianna Briannas numbers 3-6
by Journie August 13, 2008
5 Words related to Gianna Briannas

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