The actress is mother to two boys with her estranged husband Brian Austin Green - Noah and two-year-old Bodhi.
Megan grew up in a strict Pentecostal household so is determined to ensure her boys have a different, more free, upbringing, and as such she doesn't give them a set of rules to live by.
"I grew up in a pentecostal household, it's Southern Christian," she explained during an interview on Jimmy Kimmel Live on Wednesday night. "The women in the church are only allowed to wear pants, you can't wear dresses, you can't wear make-up or jewellery, so it's a really sort of oppressive environment to grow up in. But I sort of lean left of that now.
"Noah wears dresses so there are no rules - you can be whatever you want to be in my house!"
Megan is someone who believes in the spiritual side of life and regards the use of astrology as incredibly important. When she was pregnant with both her boys she was given predictions about their paths in life and that's something she truly believes.
"They informed me when I was pregnant with them (that they were bohemian revolutionaries)," Megan explained. "They tell you who they are when you're pregnant if you're open to hearing those sorts of things.
"I don't think someone who's going to be a financial planner is going to come to me as a mother. I think they are all going to me sort of more artistic and rebellious types."
The stunning actress has had something of a break from the acting industry since welcoming her two boys into the world. However, she can soon be seen on television screens after stepping in for Zooey Deschanel on hit show New Girl while the actress is on maternity leave.
"They asked me to come in for a few episodes and I don't do a lot of TV so I was a bit sceptical of why they would ask me to do this, this is a comedy and I'm not necessarily associated with my comedic stylings so I wanted to know what it was all about," she said. "So they pitched it to me and I thought it was really funny. And I watched it and I think the show's hysterical and everybody on it is really talented."
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