Olivia Wilde and Jason Sudeikis's 1-year-old son Otis is definitely a mama's boy!

The 31-year-old posted an incredibly cute photo of her child playing with his new hat – which just happens to be mommy's bra! The actress shared the precious moment on Instagram captioning the pic, "Hey, bra."

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Hey, bra.

A post shared by Olivia Wilde (@oliviawilde) on

Too cute! Click through the gallery to see more celebrity kids at their cutest.