Strictly Come Dancing professionals Kevin Clifton and his sister Joanne enjoy a very close bond, despite rarely featuring on each other's social media feeds.MORE: Kevin Clifton melts hearts as he enjoys 'lovely' reunionBut on Friday, Joanne shared a picture of the pair together, alongside their parents, as they gathered to celebrate their mum's birthday.WATCH: Kevin Clifton reveals real reason he left StrictlyThe family were all together in what looked to be a small bistro, and they recently