United Kingdom, May 22 -- Rumer Willis believes she looks "hotter" than ever thanks to the "spiritual work" she's done.

The 37-year-old House Bunny actress - who is the eldest daughter of Bruce Willis and Demi Moore - has insisted her new look isn't down to cosmetic surgery and revealed her face has "physically changed " because she's been focusing on spirituality in the last few years.

During an appearance on The Inside Edit podcast, Rumer explained: "In an interesting way, I feel like the outer reflection is also [proof of the inner work].

"I'm hotter than I've ever been. That's not because I've had a bunch of plastic surgery. I don't even get Botox anymore, I wish. That's why I have all these lines on my forehead when I talk."

She ...