According to sources, the Maroon 5 singer and his Victoria's Secret model wife are expecting their first child toegther, after it was revealed that Behati is three to four months pregnant and that they're 'over the moon&'.
While the pair have not officially announced the news, the 36-year-old frontman has done nothing to dispel the rumours.
Adam took to his Instagram account to share a photograph of a new range of Maroon 5 baby bib merchandise with his 5.7 million followers.
The Voice judge captioned the snap; 'Yeah we selling bibs now.'
Fans were quick to start commenting their messages of congratulations to the couple who have been married since 2014.
One said; 'Congratulations both of you. Can't wait for seeing your baby. Will be so gorgeous OMG! Congratulations once again.'
Another fan said; 'I knew this is what this post meant!'
Ever since the couple started dating in June 2012, they have both been vocal about their plans to start a family together.
The Namibian model told Net A Porter magazine she would 'definitely' be having children with Adam.
While the Los-Angeles born star said live on Kiss100 FM radio; 'I want to have 100 kids. I want to have more kids than would be socially responsible.'
Their relationship was first made public in June 2012 when they walked the red carpet at the GQ Gentlemen's Ball in New York.
They were married two years later in 2014 with almost 300 guests at a lavish ceremony at Floral Farms in Los Cabos, Mexico.
Guests reportedly included Robert Downey Junior, Candice Swanepoel, Jonah Hill and Jason Segel.
Adam said of his wife; 'She makes me the best person I can be... she's the best in the world.'