Article continues below advertisementJenna Dewan nearly exposed her naked body in a sultry towel snap.The dancer, 45, covered up in solely a towel during a spa session on Thursday, December 4.Dewan snapped a selfie in the mirror of Fusion Healing Sanctuary in Los Angeles, Calif., as she lay on a bed.Article continues below advertisementSource: @jennadewan/InstagramJenna Dewan got a massage at the spa.The star was surrounded by crystals as she received acupuncture and a somatic massage.She called the experience a "dream" and "birthday gift to [herself].