Apologies if you figured this out already, or if I'm totally off base.
I found a blog post with photos of what I think is Yuliya posing for some couples boudoir shots:
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(Back ups of the photos are in this gallery:
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)
Here's one of the best photos that I upscaled with Topaz Photo AI:
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I used the EXIF data of one of the photos to determine when it was it taken. Then I searched back through her Instagram. I found a video clip posted the day after the photo was taken. In it she talks about couples boudoir:
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(below is a photo posted with the video clip)
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I believe these are all shot on the same set. One of the masquerade style masks in the video looks like one worn by the model in one photo. The model also wears a black chocker like Yuliya does. Or perhaps I'm just dreaming...