Us Weekly revealed the exciting news, reporting that multiple sources close to the pair confirmed the word to the publication.
The 26-year-old model, who is due on the 20th September, was spotted registered at West Hollywood’s Bel Bambini.
The Victoria's Secret starlet was joined by co-angel and mum-of-one, Lily Aldridge.
One eye witness at the shop heard Adam's wife tell the brunette beauty, “This is a whole new world,” as they bypassed the boys section of the store.
The news of the angel baby was confirmed back in March, with sources confirming that the model is already three to four months along.
Insiders also revealed that, unsurprisingly, her rocker hubby Adam is “over the moon” about the wonderful news.
A month later, in early April, the proud daddy-to-be confirmed the upcoming arrival on Instagram, with a photo of a bikini-clad Behati in a Lakers hat, which he captioned, “My two favorite laker fans.”
Meanwhile, the 26-year-old recently handed over her glittery bra and wings to slip into something a little more comfortable.
"Yup took the plunge. First pair of maternity jeans and it feels so good," the expectant mum penned to her 3.6 million Instagram followers.
The couple began their whirlwind romance in June 2012.
Two years later, they tied the knot in a lavish ceremony in Los Cabos, Mexico, and it wasn’t long after the baby talk began.
Just one month into happily married life, Adam revealed to Ryan Seacrest that he and his new wife were eager to start a little family, or rather a huge one.
“We’re definitely going to do it," the Sugar singer said during a KIIS FM radio interview before joking, "I want to have 100 kids. I want to have more kids than would be socially responsible.”
And the South-African beauty agreed with her handsome hubby, revealing that just like him, she too longs for a big brood.
“I’ve always wanted a family since I was a little girl, a big family… I’m an only child so I wanted like 10 kids… for sure,” she said during an interview with Diana Madison earlier this year.
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