Kourtney Kardashian and Travis Barker Reveal the Sex of Their Baby

Kourtney Kardashian and Travis Barker are about to be the proud parents of the Kardashian krew's newest addition!

The pair teased fans with a new video on Instagram late last night, June 24, where they revealed the gender of their bundle of joy, and it's a bouncing baby boy!

Kardashian, wearing a skin-tight, high-necked white body suit tucked into her maternity pants, sat on Barker's lap at his drum kit as the clip began. She leaned back to kiss him as he began a classic drum roll, while the crowd screamed, with one person—possibly Kardashian matriarch Kris Jenner—shouting, "Yeah, let's get the party started!"

As canons shot out blue bits of confetti and a burst of smoke, he smashed the symbols in unison. The two then hugged as the crowd celebrated, with a few voices chorusing, "I knew it!"

"Boy or girl?" she wondered in the caption, using a blue and pink heart emoji.

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The pair announced the newest addition to the family to the world just over a week ago, with Kardashian holding a sign reading, "Travis I'm pregnant" up in the crowd during a Blink-182 concert, taking inspiration from an old-school music video from the band.

The new baby marks both Kardashian and Barker's fourth child, with the reality star sharing Mason, 13, Penelope, 10, and Reign, 8, with ex Scott Disick, 40, and the drummer sharing Landon, 19, daughter Alabama, 17, and stepdaughter Atiana, 24, with ex-wife Shanna Moakler.

Next: Travis Barker Kisses Kourtney Kardashian's Baby Bump in New Pics