Formal:
* Deux filles: This is the most straightforward translation and is suitable for most situations.
Informal:
* Deux petites filles: This translates to "two little girls" and is more informal.
* Deux gamines: This translates to "two kids" and is quite informal.
Emphasis on quantity:
* Deux filles, rien de moins! This translates to "Two daughters, nothing less!" and emphasizes that there are exactly two daughters.
The best choice depends on the context and the level of formality you want to achieve.