The former Home and Away actress gave birth to a baby girl at the Royal North Shore Hospital in Sydney earlier this week. According to Woman's Day, the baby arrived six weeks earlier than expected.
Lleyton revealed the news on his blog, saying: "Bec, Mia, Cruz and I welcomed a beautiful baby girl into our family last Tuesday. Mum and baby are great! Dad, big sister and brother elated."
The name of the baby is yet to be announced to the public. The couple have two other children - Mia, 4, and Cruz, 1.