The news came in a wee-hours tweet from Perry, who wrote that she was "ecstatic" to reveal the initial dates of what she's calling the Prismatic World Tour.
Set to launch May 7 in Belfast, Northern Ireland, the trek is to wind its way through England and Scotland before ending up at London's
Icona Pop will be busy: Last week
Addressing her fans in countries besides Britain, Perry said on
The singer's previous road show, called the California Dreams Tour, earned a total gross of $48.8 million in 2011, according to Billboard, which ranked the trek at No. 13 on that year's list of top-earning tours.
On Sunday, Perry is expected to open the