Ashlee Simpson has shared a steamy snap of her husband, Evan Ross in honor of his 33rd birthday! The chart-topper, 36, took to Instagram on August 26 to post a shot of him in his birthday suit while taking a shower — see the pic here. “Happy Birthday to the love of my life. Your spirit is truly infectious, and I’m so lucky to spend everyday with you. 33 baby,” the younger sister of Jessica Simpson captioned the post.