Yelena Isinbayeva, 23, became the first woman in history to clear five metres as her domination of the pole vault continued at Crystal Palace on Friday.
Isinbayeva has set a succession of new world records
It marked the 17th world record of her career and the second time she has set a new world best at the London meeting.
The Russian cleared 4.96m, breaking her week-old record of 4.95m, then cleared the 5m barrier at her first attempt.
"It was my dream and my goal to be the first woman over five metres. I'm so happy it's a reality," she said.
Isinbayeva is now chasing Sergei Bubka's total of 35 world records, saying: "I would like to have 36 world records. It's my new goal."