The picture was posted by the Australian actress-turned-singer on her Twitter page.
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"Celebrating a fun show!!! Awesome night! My feet hurt! Ahahaha," wrote the Antipodean beauty.
The image was probably intended to send the message that there's nothing going on between her and Kara's boyfriend.
In this year's contest Holly has been paired with Artem Chigvintsev, the smouldering Russian who swept Kara quite literally off her feet in 2010.
They have since set up home and are blissfully happy together as they revealed in HELLO! magazine.
Meanwhile, Holly's real life partner is millionaire property developer Nick Candy – her boyfriend of two years.
For his sake as much as Kara's, the former Neighbours star is keeping her relationship with Artem Strictly professional.
As she explains: "When you are suddenly spending time with a random man, it's important that everything is above board."
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