Geordie Shore star Marnie shocked viewers when she shook her boobs in Saira's face as part of a game of truth or dare.
Speaking on ITV's This Morning, Chloe - who previously appeared in CBB - said: "I found this really difficult to watch because me and Marnie were really close at one point. We aren't as close anymore but I know Marnie really well.
"100 per cent she was kind of goaded to do that. I don't know how long they were playing truth or dare for, we only see a snippet of a 24-hour show.
"What she did was wrong. I think she immediately knew that. I think as soon as James [Whale] said something, she maybe regretted it anyway. The Marnie I know is from Geordie Shore. Geordie Shore going into Celebrity Big Brother with people from different backgrounds is a mixture for disaster, really."
James Jordan, who was being interviewed alongside Chloe, said: "You can't justify it. I understand drink was involved and she was goaded by other people but at the end of the day, she still did it."
The pair were being interviewed by Eamonn Holmes and Ruth Langsford about the latest CBB drama.
Ruth defended Saira, whom she works with on Loose Women, saying: "Obviously I like Saira and work with her and know her better. I can understand why she could be irritating to some people but actually, [what happened with Marnie] helped her because I think up until that point some people may have gone, 'Urgh, Saira is a bit annoying' but the minute Marnie did that, immediately the sympathy.
"Saira was very dignified and just looked away. I really respect James [Whale] for standing up and saying it's out of order."
Watch them discuss CBB below: