Katy Perry offers to write a campaign song for Hillary Clinton

Katy Perry has offered to create a campaign song for former Secretary of State Hillary Clinton if she chooses to run for President in 2016.

The Dark Horse singer, who has become one of current leader President Barack Obama's most fervent celebrity supporters, has already signed on to back Clinton if she decides to join the race to replace him when his second and final term ends in 2017.

Perry posted a picture of herself at a Clinton book signing event on Instagram.com on Friday (20Jun14), with the caption, "I told hillaryclinton that I would write her a 'theme' song if she needs it..."

Clinton, who ran against Obama for the Democrat Party's presidential vote in 2008, has yet to confirm she'll be running in 2016, but she is expected to be a leading candidate, with many political pundits predicting she will become the first female president.