Olivia Wilde and Jason Sudeikis offer rare glimpse of baby Otis

They’re generally very private about their 15-month-old son, Otis, but this week actors Olivia Wilde and fiancé Jason Sudeikis shared a Throwback Thursday with their adorable little boy. Dressed in a sweet bear onesie, Otis gives a less-than-thrilled look to the camera, and his 31-year-old mom captioned the snap accordingly: "#tbt to Otis developing his hatred for tiny bear suits #futuretherapymaterial #winter2014 by Dad,”

Olivia and Jason prefer to keep their son out of the spotlight – although last week 31-year-old Olivia couldn’t resist posting another funny photo of her little boy crawling through a dog door. “Escape artist,” the star joked alongside.

#tbt to Otis developing his hatred for tiny bear suits. #futuretherapymaterial #winter2014  by Dad

A photo posted by Olivia Wilde (@oliviawilde) on

Olivia Wilde shared an adorable photo of her son Otis this week

Olivia and Horrible Bosses actor Jason, 39, started dating in November 2011 and got engaged in January 2013 – they welcomed Otis Alexander in April 2014.

Jason opened up about their young son during an appearance at the Sundance Film Festival in January. “He smiles a lot,” he told E! News. “I would say any looks he’s got going – I feel like he’s a real cute little guy – that’s Olivia’s doing. And then him smiling is both of us because we’re really lucky.”

The We Are The Millers actor added: “He’s surrounded by love 24/7 and 80 per cent of it is female based. So I think he’ll turn out to be a really good guy. I’m excited to see who he is.”

Escape artist.

A photo posted by Olivia Wilde (@oliviawilde) on

Olivia couldn’t resist sharing this photo of her little “escape artist”

Earlier this year, Olivia penned an honest article for Shape magazine addressing the unrealistic expectations women face after childbirth. “The truth is, I’m a mother, and I look like one,” said the star – who admitted she’s the “softest” she’s even been.

“I believe in a world where mothers are not expected to shed any physical evidence of their child-bearing experience,” Olivia added. “I don’t want to waste my time striving for some subjective definition of perfection.”

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