Katy Perry even looks gorgeous without make-up, shows off the real her in Part Of Me film

Above: Katy Perry appears without make-up in her Part Of Me tour documentary during wardrobe fittings

ABOVE: Katy Perry reveals what she looks like with no make-up on, even getting her wig fitted before the sh

ABOVE: Katy Perry has confirmed that her scenes with Russell Brand WILL be featured in Part Of Me

ABOVE: Katy Perry looks a world away from her usual made-up self (above) as she strips back the layers

THIS is going to be one heck of a 'warts and all' documentary.

Katy Perry reveals the 'real' her in her Part Of Me tour film, stripping back the layers and appearing without make-up during rehearsal and wardrobe fitting scenes.

And despite not wearing a single false lash and looking a world away from the made-up version we see of her on stage, Katy still looks amazing as she tries on some of her infamous costumes in a brand new teaser clip from the completed film.

[ See more: Russell Brand talks to Ellen Degeneres about his divorce from Katy Perry ]

Katy's fresh face famously became a bit of a talking point across the globe in 2010 when then-husband Russell Brand tweeted a rather unflattering picture of her in bed without make-up.

The singer has also re! vealed t hat her documentary WILL feature clips about Russell and their divorce, telling Ellen Degeneres that it's important to her that her fans understand that she's "not always perfect".

According to The Sun, Russell had asked for his appearances to be cut out of the film, but after Katy Perry had a word with producers it was apparently decided that it simply "wouldn't flow" without her estranged husband's scenes.

[ See more: Has Russell Brand been in touch with Katy Perry? Rumours of a 'lengthy email' circulate ]