Fremantle captain Matthew Pavlich and wife Lauren welcomed the newest member of the Fremantle family into the world today with the arrival of the couple's first child.

Harper Rose was born at 4:07pm on Wednesday 6 March at 8lb 6oz (3.8KG).

Both mum and baby are doing very well, with the new dad proud as punch and free to play against the Western Bulldogs in Mandurah this Saturday.

"You beauty!! It's a....girl!," Pav tweeted. "Both of my girls are healthy and beautiful. Mum is a bloody legend!!"

Congratulations Matthew and Lauren!