Whitbread broke the javelin world record with a throw of 77.44m in the qualifying round of the 1986 European Championships in Athletics (where she also won the final) and became World Champion in 1987. She became well known in the UK for her celebratory wiggle after defeating arch-rival Petra Felke in these events. Her performances in 1987 led to her being voted winner of the BBC Sports Personality of the Year award.