Though it looked like an unpleasant experience, Coleen has now told Digital Spy that she is missing the famous house more than she ever expected and would love to return - as long as a certain 'poisonous' Coronation Street actress isn't around.
Speaking to promote her new plus-size clothing line for Marisota, the 47-year-old opened up about her sister Bernie's recent cancer diagnosis, her arrival on the West End and why she'd "rather be poor than fake".
Can you tell us a bit about your work with Marisota?
"Ever since I had my kids in my twenties I always wanted to design a clothing range. Once your body changes and you are not the standard size ten sometimes its hard to find clothes that really fit well.
"For example even when I lost all my weight and went down to a size eight my chest was still 36GG, so I'd have to wear a size 14 top - which in dresses was a nightmare. Stylists always did their best for me, but I always dreamed that one day I could design my own and now thanks to Marisota I have."
How much input did you have in designing the collection?
"100% from design to fitting, I've lost count of the times I've been pinned with needles. But it's so important to know that a design actually works on a real woman's body - anything can look nice on paper but in reality can be totally unflattering.
"My designs have been trailed by women size 12 to 22 and up so I know what looks great on everyone because everyone is different."
Do you get a sense of pride from being able to make plus-sized women, who perhaps have body and confidence issues, feel beautiful?
"Totally. My husband loves me whatever size and shape I am, so I always take confidence from him.
"The most important thing though is to have more confidence in yourself, because then you truly do look better because you feel better in yourself. The best advice someone once gave me is, 'Nobody's perfect so don't try to be'."
Would you be tempted to branch out into more products and become more of a brand?
"I actually have already turned down a perfume offer - it was a ridiculous amount of money but I couldn't bear the scent. They just couldn't get it to smell as I imagined so I pulled out. I just couldn't lie and sell something I didn't believe in. I'd rather be poor than be a fake."
It's been more than two months now since you left the Celebrity Big Brother house - how have you found the transition back to normality?
"My God I miss being in that house so much you've no idea - apart from [being with] Julie Goodyear. I had the best time. It was like a holiday with great mates. I missed the kids and [husband] Ray but I didn't miss my phone ringing or my email pinging constantly."
Is there anything you've discovered went on in the house that has particularly surprised you? Has your opinion of anyone changed since coming out?
"I discovered that I do care what people think of me, which surprised me because I always thought I didn't. I guess no one likes to be disliked.
"When I heard what I thought was boos in the crowd I really did go to pieces. I consider myself a nice person so I'd hate to have let myself down, so reaching the final made me feel fantastic that I hadn't done anything wrong."
Do you think you'll ever make up with Julie?
"I never want to see her again - ever! I adored her in Corrie, but beyond that I don't need that sort of poison in my life."
Do you think her antics in the house may have ruined her career?
"No, she'll get a great line in panto villians I'm sure."
Are you pleased with how you came across in the house? I know you said you didn't want to embarrass your family...
"I'm just pleased that they clapped me when I got out - God, the boos were awful. I felt sick when the doors opened so to get a warm reception was even better than coming second."
As well as Big Brother, you've also been on Dancing on Ice. Would you be tempted to go on more reality TV shows?
"I'm having a rest from reality at the moment but never say never!!"
Do you ever miss being a panellist on Loose Women?
"At this stage in my life I honestly don't, but bear in mind I only left last year after 11 years. It still probably hasn't hit me fully yet that I really have left forever. Showbiz is a funny thing. You never really know what's round the corner.
"I've had 30 years in the eye of the storm from The Nolans to my marriage with Shane Richie, to This Morning, Loose Women, Dancing on Ice and Big Brother. I defo am enjoying having a bit of a breather before I step back into the line of fire again."
As a TV personality you must watch a lot of stuff on the box - what are your favourite programmes?
"I love TV and watch loads. I love Waterloo Road, all the wedding and home makeover shows. And I love X Factor, Strictly and Dancing on Ice and of course Celebrity Big Brother."
[Coleen Nolan with her fellow Loose Women panellists at this year's National Television Awards]
Do you watch your ex-husband Shane on EastEnders?
"I've never really been that into EastEnders. I'm more of an Emmerdale girl."
We're sorry to hear the news about Bernie. How is she coping? From quotes in the press, it sounds like she is remaining as strong and confident as ever.
"She is amazing. And as usual I am in awe of her. She's doing great thanks."
I know The Nolans' farewell tour has been postponed since the news. What are your career plans now?
"I am considering a few West End musical offers right now and also some acting roles. I've always wanted to act but so far haven't found a role to justify the long hours on set and away from home. But a couple have caught my eye recently, so watch this space."