Jack Osbourne has become a father for the third time.

The 32-year-old television personality and his wife Lisa Stelly - who already have two daughters, Pearl Clementine, five, and Andy Rose, two, together - welcomed a third daughter named Minnie Theodora into the world on Saturday (03.02.18), the excited parents have revealed on social media.

Jack shared a photo of their new arrival next to a board which listed her full name as Minnie Theodora Osbourne, as well as other information such as her time of birth, which was 5:57 AM.

He captioned the sweet snap: ''Hey everyone meet Minnie! She's the newest member of my girls only squad. (andy stole the ''i'' from inch) #girlsrule #playerscurse #happydaddy#hatchling (sic)''

Lisa shared the same photo on her own Instagram account, and captioned it: ''The final member of my little girl squad. Everyone, meet the angelic, miss Minnie (sic)''

And 'The Osbournes' star's famous family have already started sending in their congratulatory messages, as his sister Kelly Osbourne shared the same image again on her own account.

She wrote: ''Congratulations to my brother @jackosbourne & his beautiful wife @lisaosbourne on the birth of #MinnieOsbourne. She is perfect in every way. It was such a beautiful experience to witness the birth of this angel. I love you both so much. #ProudAuntie (sic)''

Previously, the happy couple announced they were expecting a third child when Lisa took to Instagram to share a photograph of her and Jack standing in front of the mirror with her blossoming baby bump clearly on display just before an apparent date night.

She teamed the sweet picture with the funny caption: ''Literally ate the biggest burrito ever (sic).''