Olivia Wilde sent her love to son Otis on his third birthday this week.

The 33-year-old actress dedicated a sweet post to Otis, her son with fiance Jason Sudeikis, on the toddler's birthday Thursday.

"Happy 3rd birthday, magic boy. I love you even more than you love chocolate ice cream," she captioned a photo of Otis enjoying a treat.

Wilde and Sudeikis, an actor known for "Horrible Bosses," also share 6-month-old daughter Daisy.

The actress told Yahoo! Style in July that she plans to teach Otis to reject beauty standards and embrace feminism.

"I hope to raise a child who values people for what's within them and yet I hope he experiments with his own identity and who he wants to be," she said.

"I look forward to helping him feel that type of confidence I felt when growing up.

"I like to think he's already a little feminist. And he is. He's a really good guy," the star added. "I want to promote the idea that the definition of feminism is equality and it's something that's not difficult to teach children because they are born with that sensibility."

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Wilde last appeared in the HBO series "Vinyl," and will next star in "Black Dog, Red Dog" with James Franco.

She is also slated for "A Vigilante" with Tonye Patano and "Life Itself" with Oscar Isaac.