Kourtney Kardashian & Scott Disick Name Their Third Child Reign Aston Disick - Not Jeffrey Robert Disick [DETAILS]

Finally! We all know the name of Kourtney Kardashian and Scott Disick's third child, and their second son. MStars News has learned that the couple has named their son Reign Aston Disick.

The proud mama decided to reveal the name of her son via Instagram on Sunday, one week after giving birth- the same day her first son, Mason was born.

In the photo seen above, Kourtney caption the first snapshot of her newborn:

"Madly in love with my little Reign Aston Disick."

The reality star also has a 2-year-old daughter, named Penelope Scotland Disick.

MStars News previously learned that a possible name for Kourtney and Scott's son may have been Jeffrey Robert Disick, after both of the third-time parents' late fathers.,

"They really want to honor their fathers and have talked very strongly on Jeffrey Robert. That would be the order the name would be presented," a source close to the couple said. "Scott really wants that more than Kourtney. Kourtney actually wants a more unique first name but may compromise and have Jeffrey as the middle name to make Scott happy as well."

Now we know that baby Reign's mother decided to be unique, and continue naming her kids with unexpected names.

After fans watched Kourtney's pregnancy unfold in Keeping Up With The Kardashians and Khloe and Kourtney Take The Hamptons, we now know what this mother was craving while carrying baby number 3.

According to E!, Kourtney craved bagels this time around. The eldest Kardashian claimed she "had them literally for dinner every night."

"A bagel with cream cheese and jelly," Kourtney revealed, "I would have plain ones just in my bag at all times. Khloé would be like, 'What's in your purse?' I'd have two bagels at all times."

MStars News previously reported that Kourtney loved being nude and pregnant. She previously posed for NSFW photos for DuJour magazine.

Kourtney said, "I really feel so comfortable, and almost at my best, when I'm pregnant," she adds, "I don't know, I just feel just like it's such an amazing feeling, the transformation that your body goes through and knowing that this is what my body is made to do, there's something about that that's so empowering and beautiful and I just really embrace it."

Meanwhile in the Lord Scott Disick's world, the third time around father shared a card that Khloe's beau, French Montana sent congratulating the parent's revealed what he'd name their third child.

 Classic thanks @frenchmontana

A photo posted by Lord Disick (@letthelordbewithyou) on Dec 12, 2014 at 8:42pm PST