The Horrible Bosses actress, 44, looked stunning without a scrap of cosmetic help in a photograph with her close pal and hairdresser to the stars Chris McMillan.
The selfie shows Jen and Chris fresh faced as they stare into the camera on what looks like a sunny balcony or roof terrace.
Chris created the famous 'Rachel bob' for Jen when she starred in hit TV series Friends and has been her hair stylist ever since.
Jen's au natural look is a far cry from her appearance at the premiere of We're The Millers in New York last week.
She looked elegant and perfectly groomed in Burberry as she walked the red carpet at The Ziegfield Theatre on Thursday evening (1 August).
Jen has been engaged to Justin Theroux for a year but recently explained that they are in no rush to tie the knot.
She said: "We just want to do it when it's perfect, and we're not rushed, and no one is rushing from a job or rushing to a job. We have yet to set any date."
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