It look like Hayden Panettiere wasn't the only pregnant celebrity to show off her bare baby bump this weekend.

According to Us Weekly, Kourtney Kardashian stripped down to a bikini as she enjoyed a small pool party with a group of friends to kick off the beginning of summer.

The "Keeping Up with the Kardashians" season 9 star posted a photo to her Instagram account on June 23rd after having a fun filled weekend.

Scott Disick's girlfriend posted a picture of her bare tiny baby bump in a bikini as she and four other girl pals leaped into a pool.

Attached to the snapshot was the caption, "Sundayzzzz!"

The water activities came after Kourtney Kardashian let her younger sister Kim, use her backyard for a "Kidchella"-themed birthday party in order to celebrate her niece, North West's first birthday.

The Coachella-inspired bash featured a ferris wheel, a bounce house, face-painting, sno-cones, and a stage for lip-syncing.

The magazine reported that this is the first time Kardashian has exposed her stomach since news broke about her third pregnancy earlier this month.

The brunette beauty and her boyfriend are already parents to children Mason, 4, and Penelope, 23 months.

Since the announcement the pint size reality star has managed to keep her pregnant belly covered up in loose tops and dresses.

It was officially confirmed that Kourtney Kardashian was indeed expecting in a preview for an upcoming episode of her reality show. The couple is expected to welcome the new baby girl or boy later this year.

Kim Kardashian recently admitted that although she admires her sister's parenting, she has her own way of doing things.

During a chat with the Mail Online in Cannes, France she said, "Watching my sister Kourtney, I do learn a lot, but I have my own parenting style," acknowledging that her sister "does more of an attached parent style where her kids sleep in her bed with her."

However, Kanye West's wife said, "Especially with the third baby coming, they're gonna need a bigger bed or they're gonna need some other rules."