The flight from Azerbajian's capital Baku to the Russian city of Grozny crashed with 67 passengers and five crew members on board near Aktau, western Kazakhstan, this morning.
The Welsh performer, 30, and her professional dance partner Kai Widdrington impressed judges with a sizzling Cha-Cha to Kylie and Danni Minogue hit 100 Degrees.
She told royals fans she was 'hugely grateful' to the hundreds of people who had written to her offering their support after her cancer diagnosis earlier this year.