"Favorite Girl" Is A Song By Canadian Recording Artist Justin Bieber. The Song Was Written And Produced By D'Mile And Antea Birchett Anesha Birchett And Delisha Thomas Also Receive Writing Credits. The Song Is Mid-Tempo And Merges Teen Pop And R&B Elements. The Song Debuted At Number Twelve And Twenty-Six In Canada And The United States Respectively. Bieber Performed The Song On Several Occasions Most Of Them Being The Acoustic Version Of The Song Including As A Supporting Act On Taylor Swift's Fearless Tour.