Literal translations:
* Reine du ciel: This is the most literal translation, but it sounds a bit poetic and archaic.
* Dame du ciel: This is another literal translation, with a slightly more formal tone.
Figurative expressions:
* Reine des airs: This translates to "queen of the air" and is a more evocative way to describe someone who dominates the skies, perhaps a pilot or a bird.
* Maîtresse du ciel: This translates to "mistress of the sky" and suggests someone who has complete control over the air, perhaps a powerful deity or a skilled aviator.
Other possibilities:
* La déesse du ciel: This translates to "the goddess of the sky" and is a good option if you're talking about a mythological figure.
Ultimately, the best French phrase for "sky queen" will depend on the specific meaning you want to convey.