Kim Kardashian Baby PHOTO: Kanye West's Baby Mama Posts PRANK Image of North West on 'Tumblr Tuesday', Drives Fans Crazy, Really Kourtney Kardashian's Son Mason Disick

Kim Kardashian gave birth to Kanye West's daughter North West on June 15... and STILL no baby photos have yet to leak online! Not cool, KimYe! But on July 30, Kim K posted a surprising photo on her official "Tumblr Tuesday" blog. In the image, the "KUWTK" starlet is cradling a newborn baby in her arms alongside sister Kourtney Kardashian. Of course, fans initially thought this was the first public picture of North West! Not true... sort of just a prank. The photo is rather old... the baby in the snapshot (wrapped in a blue blanket) is probably Kourtney's son, Mason Disick.

On Tuesday, the infamous reality beauty posted this on her officialy Celebuzz blog:

This week's Tumblr Tuesday shout out goes to KimKourtKhloe!! This Tumblr is so glam and gorgeous. I love your style and how you made all of the pictures unique to your site! Great job!!

I look forward to seeing your fan blogs every week because it reminds me how truly blessed and lucky I am for having such amazing fans. You guys are the greatest! So make sure to leave your comments below and share links to your Tumblr blogs, because I may choose yours for my next Tumblr Tuesday!! Xo.

With a quick glance, fans probably believe this is North West (considering Kimmy's holding the baby in such a loving way). But after a closer look, viewers realize it can't be little KimYe. Kim K appears rather slim for someone who just gave birth... suggesting this pic was taken awhile ago. Plus, the blanket's blue and the blog post was dedicated to sister Kourtney... it's probably Kim's adorable nephew Mason.

Kim K's wasn't intentionally trying to "prank" her fans... but come on now!

Some were not very amused:

Kathy Jimenez: "Enough, we all know it's not your baby Kim,"

Anabel Ibarra Covarrubias: "Enough kim!! We already know this is not ur baby north west!! ... U want millions of dollars just to see ur baby ? C'mom ... Ur baby worth that money? Cuz i dont think so!!!"

Do readers agree - should KimYe just debut their little youngster already?