The former Celebrity Big Brother star uploaded the racy photo to Twitter on Sunday night (5 January), adding the caption: "Make-up free today."
Courtney's selfie came a few days after the 19-year-old bemoaned the fact she can't watch Celebrity Big Brother over in the US, where she lives.
"Wish I could watch #CBB over here in Hollywoodland! :(" she tweeted.
Courtney found fame in the UK when she appeared on the Channel 5 show last year alongside stars including TOWIE's Mario Falcone, Geordie Shore's Charlotte Crosby and Dustin Diamond from Saved By The Bell.
After being evicted from the house, Courtney told CBB host Emma Willis that she had grown up during her time in England.
"I gained strength. That's one of the reasons why I feel more like a woman. I was independent and I feel great. My experience has been beautiful, stressful, crazy, all over the map, but at the end of the day, I'm so glad I did it. I'm very grateful and blessed."
It came as no surprise to some, therefore, when shortly afterwards she announced her separation from husband Doug Hutchison.
Courtney was 16 when she married the actor, then 51, after meeting him via an online acting workshop. He had travelled to the UK to support her on CBB and was frequently seen cheering her on from the crowd outside the house.
They announced their split in November but insisted they would remain friends and would continue to live together for now. Doug is also retaining his role as Courtney's co-manager.
Courtney told FOX411 that same month: "It's been working out okay...it's fairly new so I don't know what the future has to hold but I hold hope in my heart that we can prevail and remain close because through the transition of our marriage and realising we aren't meant to be together romantically, we realised we made better friends than partners in that sense."
Check out the Celebrity Big Brother January 2014 lineup in pictures:
Copyright: Channel 5