Writing in her The Sun column, the TV presenter shared her thoughts on Louis' baby news and the recent Twitter row between Zayn Malik and Naughty Boy.
She said: "It's hard to keep up with all the goings-on of the One Direction boys. But congrats to Louis Tomlinson on becoming a dad-to-be although it's a shame he is apparently no longer with the mother of his unborn child.
Lorraine continued: "I'm afraid, though, I really can't take seriously the spat between ex-member Zayn Malik and the producer when the latter answers to the name of Naughty Boy.
"It all reeks of the playground and I reckon they need to grow up and behave. Especially if they are going to be at the stage of bringing new lives into the world."
Louis is expecting his first child with US stylist Briana Jungwirth. It's thought they shared a few dates in May but are no longer together. It's said they are now close friends and fully committed to raising the child together.
Zayn, meanwhile, lashed out at producer Naughty Boy last week, tweeting at him: You fat joke. Stop pretending we're friends no one knows you."
The former 1D star had been working with Naughty Boy on solo music following his exit from the band in March. He also tweeted the cryptic remark: "Someone learned how to upload a video… maybe now he should learn how to use logic. Ha. You ain't s**t but a fake."