Britney Spears' Lawyer Slams Kevin Federline

Britney Spears' lawyer has slammed her ex-husband Kevin Federline for violating her privacy by posting "cruel" old videos on social media on Thursday.

Federline leaked videos on Instagram of the pop star allegedly arguing with their two sons Sean Preston and Jayden James, who were allegedly 11 and 12 years old at the time.

Spears is shown reprimanding the boys for not using face lotion and for entering a store without wearing shoes.

Rosengart also hinted that Federline, may have broken privacy and cyberbullying laws by posting videos that were recorded without Spears' knowledge.

The lawyer revealed that he is working with Instagram to "ensure" that Federline "adheres to its rules and we are exploring all appropriate relief against him". The videos have been deleted.

On behalf of his client, Rosengart concluded, "We urge Mr. Federline to act with a measure of grace and decency and to cease from publicly discussing private matters, which benefits no one."

The war of words between Federline and Spears began when he claimed their boys hadn't seen their mother for a few months because they are embarrassed about the provocative photos she posts.