Avril Lavigne is a mom!

The singer, 42, welcomed her first child, a daughter, with a mystery man, she announced on Friday.

“Our Mini F—ing Princess has arrived 🎀👑🍼🩷,” Lavigne wrote on Instagram alongside the first photos of her newborn.

In the first picture, Lavigne and her mystery partner held their baby daughter’s hand.

The next image showed the “Complicated” singer cradling her newborn, who was dressed in a cheetah-print outfit.

Lavigne also shared an image of three pairs of Vans sneakers — seemingly for herself, her mystery partner and their daughter.

This story is developing.