Over the weekend, Teigen shared a set of snaps of herself posing in a white monokini, sitting on a countertop with a flower in her hair and her bump proudly on display.
In the second photo, Legend joins his wife, sitting beside her in a shirt and shorts as he cradles Teigen's stomach.
"Spot the difference," the model cracked in the caption.
Teigen and Legend are already parents to 1-year-old daughter Luna, who later appeared in a sweet family snap with her parents. While Teigen and Legend are smiling for the camera, Luna doesn't look quite as enthused, although she's likely having plenty of fun on her family's getaway.
Teigen also showed off her baby bump in a previous snap, posing in a body-hugging maxi dress and writing, "aloha, bebe."