Avril Lavigne welcomes first child

Avril Lavigne has become a mother for the first time.

The Sk8er Boi singer, 42, announced she had welcomed a daughter on her Instagram page on Friday. She has not revealed the identity of the father.

"Our Mini F**king Princess has arrived," Lavigne wrote on Instagram alongside a photo of herself cuddling her newborn, a picture of her and her mysterious partner holding their new arrival's hand, and an image of three pairs of checked Vans slip-on trainers on a skateboard.

In addition to keeping tight-lipped about the name of her beau, the Canadian star also did not reveal details of her baby daughter's name.

Lavigne has two previous marriages, to fellow rockers Deryck Whibley and Chad Kroeger.