Story-pic Cate (left) and Bronte Campbell were all smiles at the Australian Championships in Adelaide. (Photo by Getty Images)

They’re two swimmers in the prime of their careers, but it didn’t appear there was any rivalry between sisters Cate and Bronte Campbell in the lead-up to their 100m freestyle final at the Australian championships in Adelaide.

Five times the sisters had gone head-to-head in swimming’s prestigious 100m freestyle at major events; Bronte was the victor at last year’s world championships, however Cate had come out on top in the other four meetings.

23-year-old Cate, the winner on this occasion, clocked the fastest time in the world this year - 52.38 seconds; both swimmers edging out the inform Emma McKeon (third).

Indeed, the girls from Brisbane came close to setting a new world record, just missing out on beating Britta Steffen’s 2009 milestone. But it didn’t seem to matter to the Campbells, who - as can be seen in the video below - were just excited about being Rio-bound together.