"'Everything has beauty, but not everyone sees it,' Confucius," the 'California Gurls' singer posted on Tuesday (12 July).
And as one of her fans commented: "Katy couldn't hide her beauty, even if she wanted to." True that.
Katy joins the likes of Lady Gaga, Rita Ora, Lydia Bright, Mel B and Charlotte Crosby with her latest crazy selfie.
And, while we're kind of over the 'duck face' and 'look-at-my-bikini-body' selfies that seem to clog up our feed on a daily basis, we have to admit, this is one selfie craze we can't get enough of!
Celebrities looking strangely scary, yet caring for their skin at the same time? What's not to love?
We hear Katy is a big fan of Shu Uemura Cleansing Oils so wouldn't be surprised if she's using Shu Uemura Red:Juvenus Stretch Masks, £58 for six, shuuemera.co.uk in this picture.
However, If that sounds like a stupid amount of money to spend on a few face masks, you could also try Masque Bar Green Tea Sheet Masks, £9.99 for three, boots.com or Garnier Skin Active Moisure Bomb Tissue Mask, £1.49 each, boots.com.
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