She welcomed her third child, first with Danny Fujikawa, 33, a daughter named Rani Rose, in October 2018.
And calling their little girl the 'most beautiful gift', Kate Hudson couldn't help but gush over her boyfriend on his birthday on Monday.
The 40-year-old beauty took to Instagram for the tribute post, sharing a photo of her man and their daughter.
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Birthday boy: Kate Hudson shared her love for her boyfriend and baby daddy for his birthday on Monday, posting a beautiful picture of him and their daughter Rani Rose
'This man has given me the most beautiful gifts life can give and the depth of gratitude I feel for the day he was born is beyond any measured spoken word or post,' she began.
'I believe that this gratitude exists and is present in our daughters joy and her magical spirit. Thank you Mama Fuj and Papa Fuj for raising this beautiful roller coaster ride of a special human.'
'The ups and downs and sideways were all worth it, Happy Birthday baby! @swimswammyslippyslappy. I love you ❤️.'
![All worth the roller coaster! 'The ups and downs and sideways were all worth it [sic] Happy Birthday baby! @swimswammyslippyslappy. I love you ❤️'](https://i.dailymail.co.uk/1s/2019/06/10/23/14621282-0-image-a-180_1560206765364.jpg)
All worth the roller coaster! 'The ups and downs and sideways were all worth it [sic] Happy Birthday baby! @swimswammyslippyslappy. I love you ❤️'
The photo saw Danny topless with just a cap on his head while holding up Rani in a blow up pool.
Little Rani was dressed in a yellow and white striped swimsuit while her toes were dipped in the water.
Kate's beautiful post comes after Danny gushed over his Mrs earlier in the year at the Cancer Research Gala.
'The the face of fear, she doesn't back down,' the actor told Entertainment Tonight.
