Article continues below advertisementJustin Bieber is focusing on family this holiday season.The "YUKON" singer, 31, shared an image of his wife, Hailey Bieber, spilling out of a black bikini top on vacation on Tuesday, December 30.The model made a kissy face as she lounged on the beach, donning a navy New York Yankees baseball cap.Article continues below advertisementSource: @lilbieber/InstagramHailey Bieber stunned in a cleavage-baring swimsuit.Elsewhere in Justin's photo dump were two snapshots of his son, Jack, 1, watching Dragon Tales on the television.