Sounds like Olivia Wilde's two kids have a bit of a sibling rivalry!
"I don't know who let him watch Full Metal Jacket, but he is so hard on her," Olivia joked during a Tuesday, June 13 sit-down on [The Late Show with Stephen Colbert](https://www.youtube.com/watch?timecontinue=507&v=tUcCNuin9tk)_.
"He's really putting her through the works, it's boot camp. So she's going to come out of it really ripped and with a great attitude. But he screams!" she continued.
While speaking with Stephen Colbert, Olivia added that she doesn't understand why Otis is so tough on Daisy because she got along with her siblings just fine! "I have an older sister who was so nice to me, so I'm not familiar with this," she shared.
"But I have a little brother and I was nice to him. So I don't know. I think he's aware that he's sharing me with her because I'm on Broadway and as everyone who's in a play will tell you, you miss a lot of bedtimes and it's tough," Olivia added.
Check out the gallery to see more celebrity babies born in 2016!