Jesse McCartney and Katie Peterson Expecting Second Child
Jesse McCartney and his wife Katie Peterson are expecting their second child together.
The couple confirmed the pregnancy on Thursday, Oct. 1, in a joint Instagram post, according to Billboard. The post was shared from both of their accounts at the same time. Joint posts display the same content on two profiles, so followers of either parent saw the same announcement.
The caption read, “Archer is getting promoted to big brother March 2027,” as quoted by People. That single line carries the two key details. It names Archer as the older sibling. It also gives March 2027 as the expected arrival month for the new baby.
Archer is now 16 months old and is set to become a big brother. A March arrival would make him just under two when the baby is born. That is a gap of less than two years between the two children, counting from his arrival in May 2025.
McCartney is 39 and Peterson is 38. The ages were noted in the reporting around the announcement. They place both parents in their late thirties as they prepare for a newborn and a toddler at home.
Archer’s full name is Archer James McCartney. He was born early on May 7, with his parents confirming his arrival in May 2025, according to People. He arrived three months early. He was three months old when he attended his first concert in August 2025, a milestone his parents shared publicly.
For fans following the family, this means another round of baby news less than 18 months after the first. The couple have announced both pregnancies themselves rather than through a representative. Their updates have stayed short, direct and centred on Archer. A toddler plus a newborn means busy months ahead.
No other details have been made public. The exact due date, the sex of the baby and any plans for work around the birth have not been confirmed. The announcement did not include photos from a shoot or a longer message. Further updates are expected to come from the couple themselves. For now, what is confirmed is straightforward. A family of three will become four in March.
