The Suddenly I See star desperately wants the sun to shine on her wedding day - but she's not prepared to sacrifice festival dates to marry her band's drummer Luke Bullen.
So the rocker is hoping the good weather will continue into September.
The 32-year-old says, "There are so many festivals this summer and we both love playing live so we want to find a way that we don't have to miss any live events and have a wedding date while there is still a chance of good weather.
"And we don't want to be rushing away from our service to get on stage. That leaves us with a very small window, a few dates in September or if we're lucky with the weather, early October."
Source: WENN