Gwyneth Paltrow's little boy is growing up!

The Iron Man star took to Instagram on Saturday to wish her son, Moses, a happy 11th birthday.

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"Happy 11th birthday to the love of my life, the kindest, most brilliant boy of all time. I love you more than words could ever possibly express. #moses," Paltrow captioned a sweet mother-son pic.

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The 44-year-old actress is all about family. Just last month, she shared a sweet message to her ex husband, Chris Martin, in honor of his 40th birthday, calling the Coldplay frontman the "best daddy in the world." 

See more in the video below.