Behati Prinsloo shows off her baby bump in a bikini -- see the pic!

Behati Prinsloo is loving her baby bump!

The 26-year-old Victoria's Secret model, who is expecting her first child with husband Adam Levine, put on a bikini and took to Instagram on Wednesday to share an adorable photo of her growing belly.

WATCH: Adam Levine & Behati Prinsloo Joyfully Go House Hunting

"So far so good," she captioned the black-and-white mirror selfie. "Apparently I've swallowed a bell pepper this week..." According to a few websites, a fetus 18 weeks along is comparable to the size of a bell pepper, which may explain her reference to the vegetable.

The snap comes just four days after Prinsloo posted a pic of her rocking her first pair of maternity jeans.

"Yup took the plunge," the Namibian model captioned the pic, which has since been deleted. "First pair of maternity jeans and it feels so good."

WATCH: Behati Prinsloo Shows Off Her First Pair of Maternity Jeans

She re-posted it in collage form, however, simply captioning it with a baby emoji the second time around.

Earlier this month, Levine, 37, made his first public statement that his wife was pregnant. He shared a sweet snap of her posing in a bikini (the same one she wore in her latest pic!) and a Los Angeles Lakers cap while relaxing by the pool via Instagram.

"My two favorite Laker fans," the Maroon 5 frontman wrote, with baby, milk bottle and basketball emojis.

WATCH: Adam Levine Confirms Behati Prinsloo's Pregnancy With Sweet Photo

A source confirmed the pregnancy to ET on March 10, adding that Prinsloo was 12 weeks along at the time and knows the sex of the baby. To hear more on the parents-to-be, watch the video below.

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