Depends what you are looking for as Magical Girl there are all types what it could look it although 1 Magical Girl stands out to me for having so many different looks and that's Sakura from Card Captor Sakura.

Just search engine CCS Sakura Costumes and see if anything takes your fancy.

Edit: you won't get exact matches but there is enough in game items to get a feel of a certain outfits.