Kristin Cavallari is seen with kids Jaxon, 9, and Saylor, 8 - who has her own $1.7K Louis Vuitton purse - in LA ... after romancing Mark Estes in Mexico
Kristin Cavallari, 37, looks upbeat after hitting back at haters over new TikTok toy boy, 24... as she enjoys family outing with kids Camden, 11, Jaxon, 9, and Saylor, 8
