Justin Timberlake and Jessica Biel introduce son Silas

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“The Timberlakes are ready!!! GO GRIZZ!” he captioned the photo of his adorable son cuddled by his wife.

The couple confirmed the pregnancy last February on social networks with a sweet picture showing Justin kissing his wife’s baby bump.

“Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT. #BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets,” the proud dad wrote then.

Pregnancy rumors surfaced last October when Ariel Foxman, the editor of InStyle magazine, sent congratulations to the couple.

“Congrats @jessicabiel on your impending motherhood…Looking forward to the red carpet maternity style pix to come #tbt,” he wrote.