Britney Spears shared a sweet picture of herself in a bikini with her sons, Sean Preston and Jayden James, in Hawaii yesterday. She added, "Getting ready for some pool time! Having a blast." Britney was later spotted heading to her hotel pool with a shirtless and very tan Jason Trawick and her boys. Britney and her fiancé traveled to the islands with Sean and Jayden on Monday, and they've been soaking up the sun ever since. The foursome celebrated the Fourth of July together yesterday and captured the holiday fun with a sweet snap of them all wearing leis. They were just a few of the many stars — from Zac Efron to Jessica Alba to Heidi Klum — marking Independence Day on the beach.