"Katy Perry lets the world know who she is voting for on her voting ballot dress at a campaign rally for Barack Obama on Wednesday (October 24) at Doolittle Park in Las Vegas, Nev.
The singer, who celebrates her 28th birthday TODAY (October 25), performed for the crowd before Obama took the stage to energize the thousands of supporters."
(SOURCE: http://www.justjared.com/2012/10/25/katy-perry-voting-ballot-dress-at-obama-rally/)