Elizabeth Hurley has stripped off on social media to celebrate her 55th birthday.The British actress shared a racy snap on Instagram, showing her in a bubble bath with her hair in a messy bun and her arms thrown over her head, to commemorate the special day on Wednesday. “Happy Birthday to me,” she began the caption, alongside several pink love heart emojis. “This is the fifth birthday we’ve celebrated during lockdown amongst my little group – including my mother’s 80th and my son’s 18th.