Along with her photograph, she wrote:
"Im voting naked with Katy Perry!! Vote for Hillary."
"She's the Best we got! Nude Voting series # 1 (sic)."
This followed another social media post in which the singer superimposed a picture of her onstage with Clinton.
She wrote: "Living For Hillary. Yes I vote for intelligence. I vote for equal rights for women and all minorities.
"Women Run the World now they have to get out and start supporting one another. No more misogynist feminists! No more mysogony. Get out and Vote (sic)."
It comes as Madonna celebrated the 11th birthday of son, David, last week complete with a Donald Trump pinata.
Perry, who is also a prominent Clinton supporter, kickstarted the unofficial naked movement with her video, posted on comedy website Funny Or Die on Tuesday.
The 31-year-old star explained that she wanted to use her body as "click bait" in order to get people to polls ahead of the election on November 8th.