Back in the pool for the women’s 400m freestyle on Friday morning, Titmus clocked up a personal best in the short course event. 

The teenager had not raced since night one of the titles but that didn't faze her as she went into the finals with the fastest time.

Titmus knocked four seconds off her heat time (3:53.92) to beat Chinese swimmer Jianjiahe Wang to not only claim the top spot on the podium but a new World Record.

“I am a little bit in shock actually, after the 200 freestyle I thought I had a chance, but I don’t really think about that type of thing I just wanted to do my race," she said.

“I have put in a lot of hard work since our trials five weeks ago as I wasn’t happy with how I raced there, so I put in five weeks of really hard training and the turnaround that I have had in that time has been unbelievable.

“I have dropped six seconds in my 400 in five weeks, so it just goes to show that training hard works."

Holly Barratt joined Titmus in the medal celebrations after winning the silver medal in the women’s 50m butterfly and beating her personal best which she set that morning.

Barratt went under the 25-second mark touching the wall in 24.80.

“I’m really happy with the result. Firstly, my swims in the heat and the semi, and then swimming the 50 fly in some relays as well, so I think all these races have fixed little things and it all came together in this one," she said.

“This is my first individual world level medal which is really exciting, and I am about halfway through my program here, so this is good going forward."

Barratt will be back in the pool tonight for the 50m backstroke with Jess Hansen heading into the women’s 100m breaststroke final as the second fastest qualifier.