Looks like Kim Kardashian's up to her old tricks again!

The reality star posted her first selfie this weekend, after the birth of her son Saint West on December 5 -- actually, sis Kourtney posted the Instagram. The girls are standing in front of the mirror, cell phones in hand, wearing flattering, tight black workout clothing, Kim's hair up in a ponytail. Of course KK wants us to comment on her amazing post-baby weight loss -- and we'll give her props for that. It's been about 6 weeks and she appears to be almost back to her pre-pregnancy weight. But there's something else that seems more significant about this photo -- (and yes, we analyzed every damn detail) -- Kim's FACE!!!


After the birth of daughter North West in 2013, Kim made her first post-baby appearance on Jay Leno and showed off a completely new look. Her face looked like it'd been stretched and her nose pinched, her upper lip surprisingly thin, relative to how it looks these days. Clearly she had the two-fer -- a baby tummy tuck and some face work right after the baby was born, so when she went into hiding for a few months, everything could settle and she could recover not only from the delivery, but also from the elective surgery.

Kim's online entree back into the spotlight doesn't mean she's ready to actually step out in front of the paparazzi ... we caught up with the star last night at the studio at MIDNIGHT! And she left at 2am. Somebody DOESN'T want the cameras on her ...