It was the practice of the Prophet (peace and blessings be upon him):
"He (peace and blessings be upon him) would command his daughters and his wives to go out to the Eid prayer ground on the two Eids."
Hadith Referenceصحیح الجامع الصغیر / حرف الكاف / 4888
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم] عن ابن عباس. الصحيحة ٢١١٥: ابن أبي شيبة.