She used to do this a lot.
Whether she was promoting a new product...
Nothing stopped her flashing that perfect smile.
Even when she was dressing like a Flamenco dancer...
Or splitting up from Reggie Bush...
...The less said about that the better...
Sometimes her love for life was palpable.
Then something monumental happened. She started dating Kanye West.
Kanye West doesn't know how to smile, it's a scientific fact.
This is Kanye West's happy face.
A month or two into their relationship, something curious happened. Kim stopped smiling in pictures, too.
She became all, like, meh.
Sultry staring into the distance is where it's at.
Not quite making eye contact with the photographers.
When Kim and Kanye hit the red carpet together no one, under any circumstances, smiles.
The wedding photos will be shining beacons of joy.
Urgh, so over this posing.
Khloe's doing it all wrong.
Sometimes she teases us, making it seem like she's about to crack a smile.
But the furthest she'll go is just opening her mouth a little bit.
Trying to catch her unawares? IT WON'T WORK.