Craig Revel Horwood thinks Kristina Rihanoff looks "scary" without make-up on.

Kristina Rihanoff

Kristina Rihanoff

The 'Strictly Come Dancing' judge, 51, has warned viewers the professional dancer has the tendency to release her vicious tongue from time-to-time but she can come across even angrier when she doesn't have her slap on.

Speaking on 'Big Brother's Bit on the Side' last night (05.01.16), the tough-talking panellist said of his pretty colleague: "She can be like the cold war from Russia. I'm not joking - she is so feisty! That pretty smile will go and when she hasn't got make-up on, she's even scarier!"

But, despite his largely harsh comments, the Australian-British dancer believes Kristina's stint in the infamous house will allow fans to see her "kind and loving" side.

He explained: "It's a bit odd because you are used to seeing her on-screen persona, but her personality changes when she is backstage.

"So you are going to see the real Kristina now and she can be very sweet. She is kind, loving, giving and so sharing."

The blonde beauty, 38, entered the channel 5 house last night (05.01.16) and has vowed to remain tight-lipped on her private life but has admitted she's not afraid to spill the beans on her relationship with Ben Cohen if she's pressed.

She told The Sun newspaper: "If the conversation crops up, I will speak about it, as a normal person would. If someone asks, are you dating? I'll say yes, I have a boyfriend."

Kristina and the rugby hunk sparked outrage two years ago when they began dating shortly after he split from his wife Abbey, with whom he has two children.