View this post on InstagramAfter sharing the image, the actor’s followers were quick to wish her a happy birthday in the comments, with many sharing their surprise at her age.One wrote: “Happy birthday to you! 55 has NEVER looked this good before!!”“Have a very happy 39th!! (Though you can still pass for 36...),” another user joked.The star’s teenage son, Damian, also shared a birthday message for his son on his own Instagram platform.Sharing an image of the mother/son duo holding hands as she