Jayden Federline and Sean Preston Federline kids britney spears short beach lynn spears jamie spears water ocean Jayden Federline and Sean Preston Federline kids britney spears short beach lynn spears jamie spears water ocean Jayden Federline and Sean Preston Federline kids britney spears short beach lynn spears jamie spears water oceanWhile Britney Spears enjoys a romantic vacay in Hawaii with boyfriend Jason Trawick, Lynn and Jamie Spears reunited to take Sean and Jayden to the beach for some fun in the sun!

The foursome traveled to Santa Barbara to soak up the rays and play in the sand. The boys seemed as if they were enjoying their last days of summer, making sand castles, playing with grandma and grandpa and running in and out of the water!

But Sean and Jayden weren't the only ones who were getting chummy on the beach -- are Jamie and Lynn back together?