Wladimir Klitschko, Hayden Panettiere welcome baby girl Kaya

Heavyweight boxer Wladimir Klitschko and fiancee Hayden Panettiere have become parents to a baby girl named Kaya.

The couple announced their daughter's arrival this week after she was born on Tuesday weighing in at 7lbs 14oz.

Klitschko and his actress other half told People magazine: "We are over the moon and madly in love!"

The 38-year-old and Panettiere, who have had an on-off relationship, announced their engagement in October 2013.