Kourtney Kardashian Shows Off Bare Baby Bump in Green Bikini: 'Sweet Summer'

During her fourth pregnancy, Kourtney Kardashian flaunted her progress poolside.

The Poosh founder captioned a Friday, June 23, Instagram carousel, "Sweet summer," while hanging out with her 10-year-old daughter Penelope.

As Penelope wore a neon one-piece, Kardashian showcased her growing belly in a bikini in a muted hue to match her second child, whom she coparents with former husband Scott Disick and sons Mason, 13, and Reign, 8.

A Kardashians personality and her husband, Travis Barker, announced earlier this month that they are expecting their first child together.

The expectant star held up a “Travis, I’m Pregnant” poster at the Blink-182 concert on June 16, where the 47-year-old drummer attended the concert. His band's "All the Small Things" video, which premiered 14 years ago, inspired the sign.

Mark Hoppus exclaimed during the show, "Hey Travis, you got an announcement!" after catching sight of the poster. "Somebody's still working! Let's hear it for Travis ... somebody's expecting!"

As soon as she learned she was pregnant, Kardashian showed off her baby bump on Instagram. "Overwhelmed with gratitude and joy for God's blessing and plan," she wrote.

Barker's former wife, Shanna Moakler, with whom he shares son Landon, 19, daughter Alabama, 17, and stepdaughter Atiana, 24, are equally excited about a Kravis child.

Shanna is overwhelmingly delighted for Travis and Kourtney, as revealed to Us Weekly by a source earlier this month. Knowing that the two will make excellent parents to their new child puts her over the moon. Disick is also cognizant of the couple's desire for another baby to completing their family. In June, it was reported that he had reached out to congratulate them. Furthermore, another insider revealed that all he wants is for Kourtney to be contented.