Strictly Come Dancing fans have become convinced that they've spotted the early signs of a feud simmering between head judge Shirley Ballas and professional dancer Karen Hauer. The 41 year old Venezuelan star is now the longest-running pro on the BBC competition series, having first teamed up with Westlife singer Nicky Byrne back in 2012. This year, the dancer is teamed up with comedian and radio star Eddie Kadi, 40, but the pair have had a rollercoaster journey so far.