Singer Jesse McCartney and his wife Katie Peterson are expecting their second child. The couple shared the news in a joint Instagram post on October 1, 2026, alongside several photos of the young family posing with sonogram images.
“Archer is getting promoted to big brother, March 2027,” they captioned the upload, referencing their first child and revealing the expected arrival time of their second baby. The post was immediately flooded with congratulations from fans who have followed McCartney since his early pop career.
A growing family
McCartney and Peterson welcomed their son Archer on May 7, 2025, according to reports of the announcement. The longtime couple tied the knot in Carmel, California, back in 2021 after dating for nearly a decade.
The photos shared in the October 1 post showed the family together, with sonogram images held proudly, a classic announcement style that fans loved for its warmth and simplicity. Friends and fellow musicians were among those sending love in the comments.
McCartney, best known for hits including “Leavin'” and “Beautiful Soul,” has built a loyal fanbase over two decades in music, and many of those fans have grown up alongside him, from teen pop idol to husband and father of two.
From pop star to family man
The announcement fits a pattern for McCartney and Peterson, who have shared their family milestones directly with fans on social media, rather than through statements or magazine covers. The couple’s approach has earned them praise for its authenticity and for keeping the focus on the family, not the fanfare.
Peterson, who married McCartney in 2021, has often appeared in his social media posts, and the couple’s journey from a decade of dating to marriage and now a second child has been followed closely by fans who feel they have grown up with the singer.
Counting down to March 2027
With a March 2027 due window shared in the announcement, fans now have months of anticipation ahead, and the couple’s next updates are sure to be watched closely. For now, though, the message is simple: Archer is about to become a big brother, and the McCartney-Peterson family is about to get a little bigger.
As congratulations continue to pour in, McCartney’s announcement stands as one of October’s sweetest celebrity baby stories: a singer, his wife, their little boy, and a sonogram photo that says everything about the joy of a growing family.
