Kevin Federline’s recent bid to gain full custody of his toddler sons with Britney Spears just got a whole lot better. Brit left Cali on Wednesday afternoon to join her brother Bryan in Las Vegas with tykes Sean Preston, 22 months, and Jayden James, 10 months in tow. According to California law, neither parent is allowed to take a child out of state without written permission from the other – or by obtaining a court order.

Federline snitches claim the pop singer failed to notify her ex or his attorney, Mark Vincent Kaplan, that she was taking the children to Las Vegas.