The Australian star has shared her exciting family news on social media.

Whomp, there it is! Rebel Wilson is officially a mama, sharing her sweet baby news online yesterday afternoon.

Having her baby via surrogate, the 42-year-old wrote a touching message on Instagram as she introduced the world to her first child, Royce Lillian.

Sharing a photo of the newborn, she wrote: "Beyond proud to announce the birth of my first child, Royce Lillian, born this past week via surrogate [love heart emoji] I can’t even describe the love I have for her, she’s a beautiful miracle! I am forever grateful to everyone who has been involved, (you know who you are), this has been years in the making… but particularly wanted to thank my gorgeous surrogate who carried her and birthed her with such grace and care.

Thank you for helping me start my own family, it’s an amazing gift. The BEST gift!! I am ready to give little Roycie all the love imaginable. I am learning quickly…much respect to all the Mums out there! Proud to be in your club."

Taika Waititi, Alison Brie, Melanie Griffith, Octavia Spencer and many more stars have wished the new mama well.

Rebel Wilson and her baby joy only solidifies what a busy year it has been for the star, in terms of her personal life. Earlier this year, a journalist from an Australian newspaper made headlines after blackmailing her into revealing her sexuality. The Sydney Morning Herald had given her two days to comment on her love life or they would publish a story about her relationship with fashion designer girlfriend, Ramona Agruma. Wilson shared on Instagram: "I thought I was searching for a Disney Prince… but maybe what I really needed all this time was a Disney Princess."