An "unflattering picture" refers to a photograph that doesn't make a person look good or attractive. It might show someone with an awkward expression, bad lighting, or unfavorable angles. Full definition
I see it across LinkedIn, Facebook, and Twitter every day: despite trying to grow a strong digital presence and personal brand, many people inadvertently paint unflattering pictures of themselves. (inc.com)
Birthed in 2008 and nurtured on all - access platforms like Twitter, trolls have evolved over time and now sit next to us on airplanes, slurp their coffee too loud at Starbucks, and post unflattering pictures of their co-workers on Instagram. (inc.com)
But then, much earlier, the late Harold Smith, a former Oxford - trained British colonial official in Nigeria, had come up with a rather unflattering picture of Okotie - Eboh as allegedly venal, with rather low personal morality, bordering on concupiscence. (nigeriapoliticsonline.com)