See Jamie Lynn Spears' daughter Maddie as she becomes a high schooler, plus more stars' teens and tweens then and now

They grow up so fast! Wonderwall.com is taking a look at the teens and tweens of our favorite celebs then and now, starting with this former child star's elder daughter... "Zoey 101" actress and singer Jamie Lynn Spears, who made headlines when she became a teen mom in 2008, posed with Maddie -- her then-6-year-old daughter with ex Casey Aldridge -- and Minnie Mouse at Disney's Magic Kingdom in Lake Buena Vista, Florida, on Aug. 14, 2014.

Keep reading to see an almost 14-year-old Maddie at her middle school graduation... then keep reading to see more celebs' kids young vs. as tweens and teens...