Jamelia clashed with Laurence Fox on 'Bear Grylls: Mission Survive'.
The 'Loose Women' presenter visited Costa Rica with the actor - who plays Detective Sergeant James Hathaway in the TV drama 'Lewis' - for the survival reality show but revealed there were arguments between them because they are both such strong characters.
She said: "My main issue was with Laurence. He's an alpha male and I'm an alpha female.
"I was very scared of everything early on in the series and I was having meltdowns, so I feel that I initially established myself as the wimp of the group and it was hard to change that hierarchy. But internally I was having all these experiences and they strengthened me until I was back to being 'strong Jamelia' - but Laurence wasn't willing for me to establish that position and I think we ended up clashing quite a lot."
Despite the confrontation she faced on the programme - which sees the stars embark on a 12-day survival mission - the 34-year-old singer-songwriter believes the experience has made her a stronger person.
She added to OK! magazine: "It was the most intense experience I have ever had. I feel that I walked out with so much - I felt empowered and stronger. It was everything that I expected it to be and more. I'm a huge fan of Bear Grylls. Whenever I used to watch his shows I used to think, 'Oh my god, look at that!'
"In that environment everything seemed like it was life or death. It felt like if I didn't do certain things I was going to die. I know that sounds so extreme but that's how it felt."
The show - which starts on ITV on February 20 - will also feature The Wanted star Max George, double Olympic champion Dame Kelly Holmes, comedy actor Tom Rosenthal, model Vogue Williams, former rugby player Mike Tindall and 'Silent Witness' actress Emilia Fox, Laurence's cousin.
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