Robert Kennedy Jr. -- Instagram Solution for Daughter Kyra -- Take Her Phone Away!!!

Robert Kennedy Jr. is searching for ways to control his daughter on social media, but his go-to is strictly old school .... yank her phone.

RFK Jr. was leaving a charity event in Santa Monica Thursday when our photog asked about 20-year-old Kyra and the pics that showcase her partying. Frankly, it looks relatively tame, but tame is relative.