The pop star was spotted shopping in London today while wearing a gas mask, according to USA Today.
It's unclear whether the Biebs was wearing the mask for health reasons or to avoid getting noticed. But if it was the latter, we're thinking his plan may have backfired.
This isn't the first time he was spotted wearing a surprising mask, as he apparently wore a metallic gold mask last year in Venice Beach.
If you ask us, Justin wearing a gas mask isn't fair, since it deprives us all of seeing his beautiful face!
Source: USA Today