Young Sharks supporter Sienna Bergman, a fun loving 13-year-old Kirrawee High student, had her world turned upside down when recently diagnosed with Ewings sarcoma, a bone cancer that affects children, mainly teenagers.

Last Saturday night, at half time in the Sharks versus Eels clash, Over 1,100 performers at the annual Sharks Dance Spectacular dedicated their routine to Sienna, in a collective show of support.

Before her illness Sienna was also a keen and accomplished dancer, with the dance community rallying behind her in an effort to lift her spirits and to help with fundraising initiatives.

As seen in the above footage of the routine, spec dancers had formed an ā€˜Sā€™ at the end of the performance in letting Sienna and the Bergman family know both the dance community and the Cronulla Sharks are at their backing.

After the match, Sienna and Ben Savage - also fighting a brave battle of illness - were invited into the Sharks sheds to meet their heroes post-game.