Credit: PEX/BuzzFoto/FilmMagic

Chaos in the Paltrow-Martin abode in London!

Gwyneth Paltrow accidentally sparked a brawl between her two kids with Chris Martin.

It all began when Paltrow, 38, decided that daughter Apple, 6, was going to play hooky from school.

"I'll probably get kicked out of our school for admitting this," the Country Strong star tells Good Housekeeping magazine, "but I let Apple stay home yesterday. I just needed to be with her."

On the agenda for keep-your-daughter-at-home day?

"We went out to lunch, we went to the beauty salon, we were together," actress says.

Later that night, Apple bragged to baby brother Moses, 4, saying: "Oh, don't worry, Moses. Tomorrow is your day to stay home from school."

That wasn't exactly the case, Paltrow says, and Moses began to throw a tantrum. "I was like, 'Here we go,'" Paltrow says.

She then chided her little girl for blabbing. "Apple, couldn't you have just asked me first? I know you're trying to make your brother feel better, but...oh, Apple!"

Apple didn't take that very well. "I upset her," Paltrow says. "Apple said, 'I'm sorry' and burst into tears. I didn't mean to react that way. Sometimes you really just disappoint yourself as a parent."

Lesson learned? "Motherhood has taught me mindfulness. If you just parent on instinct, you'll screw your kid up for life. You have to be so mindful."