Sian began to act at the age of 11 when she also won the National Eisteddfod.
Sian Phillips has been married three times, the time in 1956 to Don Roy a fellow student at the University of Wales, the young couple divorced three years later.
But thanks to a rigorous exercise regime and a programme of pilates classes, the septuagenarian is better placed than most of her contemporaries to meet the challenge.
These Boohoo joggers will do the trick!.