The `Part of Me` hitmaker has apparently been taking inspiration from Elizabeth Gilbert`s post-divorce memoir `Eat, Pray, Love` in making a trip to see some spectacular sights.

Referring to the title of the book, Katy - whose divorce from Russell Brand was finalised in July - tweeted alongside a picture: "I ate, I prayed, I climbed a volcano."

It seems the brunette pop star has been getting in touch with her spiritual side recently, meditating and cleansing her "chakras".

She tweeted on Monday (17.09.12): "Getting some s**t out my chakra`s! #eloquent (sic)"

And two days earlier she wrote: "Starting the day with a group meditate #breakfastofchampions (sic)"

Meanwhile, Katy has signed up to perform at a fundraising concert for US President Barack Obama.

According to the Hollywood Reporter, the `Wide Awake` hitmaker will be one of several artists who will perform at the 30 Days to Victory concert at Los Angeles` Nokia Theater on October 7.

Tickets start at $44 for supporters under 40, while general admission seats will be $250.

A dinner with the president at a nearby restaurant will follow the concert, with tickets costing $25,000.
sections: Celebrities