Is another Hills alum pregnant?!

Kristin Cavallari sparked baby No. 4 rumors over the weekend when she posted a photo from her tropical getaway with husband Jay Cutler in which she’s holding her stomach.

“Crusin',” the blonde beauty simply captioned the snap, though fans couldn’t help but comment over her suspicious hand placement. “Ah are you pregnant?! If so congratulations!!” one Instagram user wrote, while another said, “Definitely pregnant.”

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After seeing the remarks, Kristin quickly added to her caption, “Not sure why it looks like I'm holding a pregnant belly…wind was blowing and I was trying to hold down my romper.” If that wasn’t enough to convince followers, the fashion designer shared a bikini pic (she's wearing Acacia Swimwear) hours later, showing off her toned tummy.

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Swingin' around ☀️

A post shared by Kristin Cavallari (@kristincavallari) on

The 30-year-old currently has three children with her pro football player hubby: sons Camden, 4, and Jaxon, 2, and daughter Saylor, 16 months. She previously told People magazine that she’s done having kids. “[Saylor’s] my last baby. So I’m just trying to enjoy every second,” she admitted.

The proud mom added, “She is the most chill, laid back, happy baby I’ve ever seen in my entire life… My second one was not very easy, so we paid our dues with him and now we are very lucky to have such an easy girl. Although I know later in life girls are much harder, so I’m just going to enjoy every moment while she’s easy right now!”

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Kristin previously made headlines in January when she posted what many fans deemed an unflattering pic of Jay on social media. The photo led to a slew of body-shaming comments, which the reality star addressed in a later caption.

“Since Jay looked like a 300lb lesbian in my last post, I felt I should do him justice by posting him looking hot AF in this one,” the author wrote next to a more attractive image of the 33-year-old.

Scroll through the gallery below to see more cute photos of the lovebirds!