Formal:
* Reine créole - This is the most literal translation, using "reine" for queen and "créole" for Creole.
* Souveraine créole - This emphasizes the ruler aspect of the queen, using "souveraine" for sovereign.
Informal:
* La reine créole - This is a more informal way to say it, using "la reine" for the queen.
* La reine du monde créole - This emphasizes the domain of the queen, using "du monde créole" for the Creole world.
More specific:
* Reine de [lieu/groupe] créole - You can specify the location or group where the queen rules, for example "Reine de la Nouvelle-Orléans créole" (Queen of Creole New Orleans).
Ultimately, the best way to say "Creole queen" in French depends on the specific situation and the desired level of formality.