The Aussie star went on to reveal that her husband Tom Ackerley isn't exactly thrilled about having to share the bed with a bunny every night.
"He always throws bunny out of the bed," Robbie said. "He thinks it's obviously a tad ridiculous that I still sleep with bunny. Maybe he's a little jealous that bunny gets pride of place in the bed.
"He thinks I'm asleep and he'll throw bunny out of the bed and I get so cross with him. I'm like, 'Don't you throw her out!'"
On the podcast Robbie also told host Lynn Hirschberg about a secret spot she escapes to whenever the crazy world of showbiz gets a bit too much for her.
"I have this treehouse … I won't say where," the Suicide Squad star said.
"If I ever need to get away I go to this treehouse. It's pretty high, it's pretty small. It's in the very middle of a country in Europe. It's super random."
The treehouse, which even has a bathroom, was discovered by her husband and Robbie said she spends a few days up there at a time.
