Later, at the 2005 World Championships in Athletics, she earned a gold medal in the 100 m hurdles with a time of 12.66 seconds.

[1] At the 2007 World Championships in Athletics in Osaka, Japan she successfully defended her title with another 100 m hurdles gold medal performance; winning in a time of 12.46 seconds.

Despite television evidence, there was no official decision as the Swedish protest was filed too late.

[3][4] Perry missed out on a spot for the 2008 Beijing Olympics, but made the team for the 2009 World Championships in Athletics.

However, she was unable to defend her title as she entered the competition with a knee injury and was eliminated in the first round.