The "Complicated" singer, 42, shared three photos: one showing her hand and her partner's hand holding the newborn's tiny fingers, another of Lavigne cradling the baby in a leopard-print onesie with a matching headband, and a third showing three pairs of checkered Vans sneakers — two adult-sized, one baby-sized — lined up on a skateboard.

today.com reads the skateboard snap as a sweet nod to her 2002 hit "Sk8er Boi." Lavigne captioned the slideshow, "Our Mini F—ing Princess has arrived," punctuated with crown and bottle emojis.

The surprise is twofold. First, as USA TODAY notes, Lavigne had not previously disclosed that she was expecting a child — the announcement arrived with no bump photos, no hint, and no timeline.

Second, she is keeping the essentials private: she did not share the baby's name or date of birth, and she has not publicly disclosed the identity of her partner, who appears in the photos only as an anonymous hand.

Page Six reports she was last seen publicly in April leaving the Chateau Marmont in Los Angeles, and that she reportedly performed a surprise set at an after-party for Taylor Swift and Travis Kelce's New York City wedding in July.

The identity of the father is the question every outlet flags but none can answer.

Page Six reports that Lavigne's last publicly known partner is rapper Tyga, whom she began dating in early 2023 — the pair were photographed kissing at Paris Fashion Week that March — before People confirmed the romance was "totally done" that October.

Page Six also recounts the surprise February 2023 split from fiancé Mod Sun, whose representative said the breakup was "news to him." USA TODAY adds that Lavigne was previously engaged to Mod Sun and has dated Brody Jenner and Phillip Sarofim.

For now, the partner in the newborn photos remains unnamed, and ABC News notes it has reached out to Lavigne's representatives for comment.

The stakes here are emotional as much as tabloid-sized. Lavigne has spoken openly about wanting children in the past: USA TODAY cites a 2013 interview with E!

News in which she said, "I want one or two [kids] but not right now," explaining that she had a record and a tour and wanted to focus on her music "down the road, eventually."

The announcement also lands after a busy stretch — Page Six notes she performed at the 2025 Rock and Roll Hall of Fame Induction Ceremony — and after a career lived through two marriages, to Sum 41's Deryck Whibley from 2006 to 2010 and Nickelback's Chad Kroeger from 2013 to 2015, per the outlets' shared accounts.

Expect the mystery to persist. With no name, no birth date and no partner named, Lavigne controls the narrative entirely, and her history suggests she will reveal details only on her own terms — or perhaps never.

USA TODAY, riffing on the pop-punk context, jokes that a lullaby album might be in her future.

In the meantime, the three-photo slideshow — the joined hands, the leopard-print onesie, the trio of Vans on a skateboard — stands as the complete public record of the moment, one that today.com calls "the cutest damn thing" and the kind of announcement that makes "any millennial emo kid proud."