Article continues below advertisementJessica Alba took some much-needed R&R on vacation with her kids.The actress, 44, stripped down to a bikini in a series of cheeky photos and videos shared to her Instagram on Wednesday, April 1.Alba bared her butt in a printed red swimsuit as she lay face-down on a towel while seated on the sand. She accessorized her sultry swim look with a wide-brimmed hat, featuring the letters "JA" etched in the front, and oval sunglasses with gold trim.