Surprise! Avril Lavigne just welcomed her first child — a baby girl.

The pop-punk icon, 42, announced the news Friday, Nov. 13, on Instagram, sharing black-and-white photos including a close-up of her and her partner holding the newborn’s hand. “Our mini … princess has arrived,” she wrote in the caption.

Lavigne did not share the baby’s name or date of birth, and she has not publicly disclosed her partner’s identity. She had not previously disclosed that she was expecting — which is exactly why the announcement caught fans completely off guard.

It’s a new chapter for the voice behind “Complicated” and “Sk8er Boi,” the early-2000s anthems that made her a millennial icon. Lavigne was previously married to Sum 41 frontman Deryck Whibley and was engaged to Mod Sun.

Source: USA Today

Photo: Wikimedia Commons