She has interviewed a host of Hollywood stars, but Lorraine Kelly was confronted with one of her most demanding guests on Thursday morning’s show.

Puppy Scarlet accompanied her owner Sinitta to the studio for interview.

But despite having a cosy spot on Sinitta’s lap while the former pop star was interviewed, she kept barking at the TV host – and even growled at her at one point.

Sinitta (Ian West/PA)

The Toyboy singer did manage to get a few words in, defending former flame Brad Pitt – who she dated when he was an unknown.

“The chap that I knew was from a very religious family, very family-orientated, a real lovely guy. I think it’s a real shame,” she said as they discussed Pitt’s divorce from Angelina Jolie.

Scarlet kept vying for attention as the singer, who went through a divorce herself in 2010, said: “When you split up it causes the children a lot of pain so you’ve got to think about them.”

Lorraine Kelly (Ian West/PA)

Sinitta – who has two adopted children – gave the dog a gentle telling off, saying: “It’s you again, you’re worse than the children.”

As the dog kept barking and even started to growl, Lorraine said: “So funny, absolutely gorgeous, silly wee thing.”

But by the end of the interview, the puppy was going to sleep.