Kerry finished runner-up in the eighth series of CBB in 2011, while Natasha is a current housemate on the Team UK versus Team USA-themed 16th series.
Ahead of entering the house, Natasha said she had spoken with Kerry about her time in CBB and Kerry had been completely positive.
"Kerry was in and she was just like, 'It's great fun!' She didn't give me any negatives, she just said, 'You're going to love it, good luck!' As soon as I walk through the door the game has begun! I'm not someone who sits and overanalyses things, I live in the moment. There's no point in worrying, I'll take each day as it comes."
Natasha also spoke about how she would handle tension in the house, saying: "If I feel like there is a bit of tension building up between me and a Housemate I will say, 'Can we go outside and talk about it?'
"I don't want to spend days with a knot of anxiety in my stomach because then I'm not enjoying the experience. If there's a problem I'd like to think people will come to me because I'll listen to them. There will be people who are more reserved and I think it'll be the Brits. But if it's no fight between us and them it's us all the way. I'll be fighting hard."
CBB airs nightly on Channel 5
This year's CBB housemates in pictures:
Copyright: Channel 5