EXCLUSIVE VID: Sibling Tag with Issac Ryan & Serenity Reign Brown!

How well do these star siblings know each other?

It was a family affair when Raven’s Home star Issac Ryan Brown and his little sister, Serenity, came to the YSBnow house!

The stars of the new movie Kings competed in our hilarious trivia game to see who knows each other better.

Watch below and get ready to LOL!