I had happened to chance upon cheesekidgaf's tweet about Jiyeon appearing in KWave Magazine 2014 July's issue!
The PDF that they provide is low-res so even though the pictures are "high-res", they're rather grainy and not sharp. If there are updates to the high res versions, please do share! In the mean time, these are the JPGs that I had converted from the PDF
Credit: Jiyeon + K-pop Square + tiaradiadem + vancew90 + chesskidgaf