Jennifer Garner, Violet, and Seraphina stepped out in Brentwood yesterday. The girls got started on Halloween fun as they went trick-or-treating at local businesses in the area. Jennifer, Violet, and Seraphina kicked off their weekend with a trip to dance class, and Violet was decked out in her ballet leotard. She'll have the chance to dress up again tomorrow, though some families have already been spotted out in character ahead of the holiday. Amy Adams's daughter Aviana wore a cat outfit at the pumpkin patch, while Katherine Heigl's little one wore a princess dress this afternoon. Celebrities have gotten in on the festivities too, with Kate Hudson's annual bash bringing out many famous faces in costume last night.