She is stepmom to husband Joshua Snyder's two sons, Jack and Cade, 13. Last week, Kinsey celebrated her daughter Isabel's 16th birthday, sharing a sweet throwback photo of the mother-daughter duo.

Ashlee Simpson—who shares son Bronx Wentz with ex-husband Pete Wentz—celebrated her eldest's 16th birthday by sharing a photo of the teen towering over his mom and writing, "You are my rock." ...