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Happy birthday, Ryder Robinson!

Kate Hudson's eldest child turned 16 years old on Tuesday. The 40-year-old actress celebrated the major milestone by posting a throwback video of her son on Instagram.

"I didn't realize it would be here so fast!" she captioned the footage, which showed a then 2-year-old Ryder blowing out his birthday candles. "16 years today. 16. I will savor these next couple years before he flies the nest. People sometimes get sad on days like this. Time creeps up on us and rocks us a bit, reminding us that the years don't wait for us to be ready. Well, RYDER IF [YOU'RE] READING! I'M READY!!! I'm excited for your future. An amazing young man you are. I am honored that you chose me to be your mother. And here's the thing...you still have two years under this roof. My roof, my rules ;) Happy Birthday baby @mr.ryderrobinson."

The proud parent also posted a few videos of the birthday boy on Instagram Stories. Although, Ryder didn't seem thrilled about his mom's camera work. When the How to Lose a Guy in 10 Days star asked her firstborn how 16 was treating him, he replied with a smile, "It was great until you started filming me."

Kate shares Ryder with her ex Chris Robinson. She also shares her son Bingham Bellamy, 8, with her ex Matt Bellamy and is the mother of Rani Rose Hudson-Fujikawa, whom she welcomed with boyfriend Danny Fujikawa in 2018.

To see some of her family's cutest photos, check out the gallery below.

Kate Hudson, Rani

Instagram

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

Kate Hudson. Danny Fujikawa

Instagram

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

Kate Hudson, Sons, Ryder, Bingham, Daughter, Rani Rose, Kids, Children

Instagram / Kate Hudson

Kate Hudson, Danny Fujikawa, Kids, Family, Instagram

Kate Hudson / Instagram

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