The pop star and actress, who has yet to become a mother in real life, plays mum to triplets on the show - and she admits she has started nagging her TV children about scoffing down treats take after take.

"The thing I always find funniest with them that I don't think they realise yet is anytime there's a scene that involves food all of them go nuts," she tells WENN. "They want to eat everything and shovel, like, mouthfuls of popcorn.

"I'm like, 'You guys, you'll realise when you get a little older that once you commit to doing that you'll be doing it all day! You're gonna be doing take after take of shovelling popcorn because you did it in the first take. And now you're gonna have to copy that because it's called continuity and you have to follow through and do the same thing'.

"But they still do it, like with candy. I'm like, 'That's a set decoration. That's not something you should eat!' "