Olivia Wilde got in on the Throwback Thursday fun when she posted a sweet family photo of herself with fiancé Jason Sudeikis and their 1-year-old son, Otis. She captioned the snap, "#tbt to Otis developing his hatred for tiny bear suits. #futuretherapymaterial #winter2014." The photo was taken by Jason himself, and we're really hoping that it's framed somewhere in their home. This is just the latest adorable snap of Otis that we've been treated to this Summer; Olivia recently posted a cute picture of them cooling off in a water fountain during a hot day at the Brooklyn Bridge Park, showing just how big he's gotten since he made his debut alongside his famous mom in Glamour magazine last year. Check out Olivia's postbaby body in a bikini and her cutest PDA moments with Jason.