"The Sisters Three" is a phrase that is commonly used to refer to a group of three female siblings. However, there are several synonyms that one can use, depending on the context. For example, "the Three Sisters" is a simple variation that can be used interchangeably. Alternatively, one can use "the Triplet Sisters" to emphasize that the siblings are triplets. Another option is to use "the Trio of Sisters" to give a more literary and poetic tone to the phrase. Lastly, "the Three Daughters" or "the Three Girls" are synonyms that can be used if the emphasis is on their youthfulness or their relationship to their parents.