The Two Board A Private Plane This Morning:

A Source tells us...

Britney Spears and Mel Gibson are currently en route to Costa Rica on vacation together. Britney arrived on time, about 5 minutes after Mel, and the plane departed at 9:05 a.m.

Mel is taking Britney and her father for a mini-vacation. We've learned they will be guests at Mel's home in Costa Rica.

Sean Preston and Jayden James are not joining Mommy Spears because the custody agreement states that the children can not leave the country unless special permission is given.

I am not quite sure that you want one whack job taking another whack job to a foreign country. It just doesn't sound like a good idea. I wonder how many scrunchies she brought with her...