From an adorable little brother to a totally grown-up guy!
All eyes were on 14-year-old Rocco Ritchie when his mom Madonna posted a new pic of her son on her Instagram account yesterday — and we seriously cannot believe how much older he looks!
(Much like his older sister, Lourdes, who's grown up right before our every eyes.)
Click through the gallery below to see even more celebrity children who have grown up before our eyes:
The 14-year-old daughter of Cindy Crawford and Rande Gerber.