Justin Bieber Shares Pictures of Himself Crying, Hailey Bieber ...

Justin Bieber's letting fans in on an emotional moment ... sharing pics of himself crying to Instagram -- and drawing a reaction from his wife.

The beloved singer-songwriter shared the pics as part of a series of posts he shared Friday ... all of them pretty eclectic we gotta say.

In fact, these pics of Justin shedding a tear are totally surrounded by other random pics ... including a couple of his onstage and a blurry pic of what seems like weed.

In any case, the shots show a total different side of JB ... more somber and toned down than what many are used to seeing -- and, like we said, they prompted a response from Justin's better half.

Hailey Bieber hopped on her own IG to reply to Justin's post ... calling him "a pretty crier" -- so, it appears she's not too concerned with the images.

Other fans though ... they reacted with a lot more worry than HB -- asking if Justin was OK and questioning why the pop superstar might shed some tears.