Bethany Firth completed a stunning double at the British Para-Swimming International in Glasgow yesterday when she made it two world records in two days.
Bethany set a new mark in the 200m individual medley, brilliantly following up Thursday's 100m breaststroke record.
The 19-year-old's time of two minutes 22.67 seconds beat the old mark of 2:24.16 held by Russia's Valeriia Shabalina.
The London 2012 Paralympic gold medallist's time was another qualification mark for July's World Championships which will also be held in Glasgow.
"It's great that my family are here to support me," said the Seaforde swimmer.
"I have superb support behind me and this is great preparation for the World Championships," said Bethany, who added that she was particularly surprised by the breaststroke record.
"Breaststroke isn't my best event," she explained.
The competition at Glasgow's Tollcross International Swimming Centre doubles as a qualification meet for the 2015 IPC Swimming World Championships at the same venue.
Bethany's time in Thursday's SB14 100m breaststroke heats - 1.14.40 - was 1.43 seconds inside the previous world mark and was also over three seconds inside the GB qualifying standard for the event.
"I'm very pleased with my performances and so glad to be here," Bethany said.
"It's been really good so far and it's always great to win.
"I swam a couple of weeks ago and did quite well but you are never sure how things are going to go."
Bethany added: "I have great support from my family, Sports Institute NI and Team GB."