Olivia Wilde shares photo of adorable son Otis Alexander wearing a bear suit

“#tbt to Otis developing his hatred for tiny bear suits #futuretherapymaterial #winter2014 by Dad,” the actress, 31, wrote in a message on the photo-sharing site on Friday, July 17, alongside a picture of herself with fiancé Jason Sudeikis, 39, and their adorable son Otis Alexander, 15 months, who was wearing a white bear onesie.

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Wilde and Sudeikis, who announced they were expecting in October 2013, welcomed son Otis Alexander in April 2014.

“Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I’m the building),” the happy mom tweeted then.

In September 2013, the House M.D. actress opened up about her desire to start a family with Sudeikis in an interview with Allure magazine, saying that her fiancé is “fantastic with children.”

Jason and Olivia started dating in November 2011 and got engaged in January 2013.