Nicole Kidman celebrates 50th birthday with her family

Nicole Kidman from left Shailene Woodley and Reese Witherspoon in a scene from

She recalled thinking: "I still don't have a life, what is wrong with me?"

Nicole and Reese are looking at a second series, and the Australian actress said: "If we can match what we did before we would be foolish not to try and put it all back together".

Later, Kidman and her family indulged in a tasty multi-layered cake.

"I'm absolutely embracing it", she added. Thank you for all the birthday love and birthday wishes.

What advice would you give to Nicole now that she's 50?

"If there's a way to take these women's lives further, it would be interesting and so lovely if we could do it". On her Facebook account (via the Daily Mail), the actress posted a hilarious photo of herself acting as though she is about to bite into her huge strawberry cake.

The Lion star - who has daughters Sunday, nine, and Faith, six, with 49-year-old country musician Keith Urban - admits she still pretends she is 21.

Reese Witherspoon: "Wishing a big happy birthday to my dear friend, the one and only, mega-talented, #NicoleKidman!". News that her younger sister, Antonia, 46, would be joining her in the United States for the birthday celebrations. There are rumors that the actress may reprise her role in Season 2, but HBO hasn't made an official renewal announcement yet.

"Happy Birthday to this lovely woman", the actress, 48, wrote on Tuesday.

ET spoke with Kidman earlier this month at The Beguiled premiere in Los Angeles, where she talked about hitting a milestone age.



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