Nicole Kidman and singer Keith Urban have celebrated their daughter Sunday Rose's 13th birthday with lots of balloons and joy.

Kidman showed off a massive three layered chocolate cake that's covered in rainbow sprinkles on Instagram.

"Happy happy birthday Sunday! We love you so much - yum yum!!!! 😍😍😍" the actress wrote.

Sunday Rose Kidman Urban was born on July 7th, 2008 and turned 13 just yesterday.

While fans might be eagerly awaiting for Sunday Rose to have her own Instagram account, her parents have other ideas.

"They don't have a phone and I don't allow them to have an Instagram. I try to keep some sort of boundaries," protective Kidman told Vanity Fair in 2019.

Kidman and Urban also avoid sharing photos of the girls on their social media accounts to maintain their privacy as children.

Sunday is Kidman and Urban's first child together and is Kidman's first biological child, but her marriage to Tom Cruise saw her adopting a boy and a girl through the church of Scientology.

Isabella Jane Cruise, 28, and Connor Cruise, 26, keep their relationship with their famous mother private and Kidman rarely speaks about them in interviews.

In 2014, Connor told Woman's Day: "I love my mum. I don't care what people say. I know that me and mum are solid. I love her a lot".