I used to wear these big shapeless clothes and ended up just looking like a potato in a sack. I've learnt now to accentuate the bits that I'm happiest with. That's probably my waist - a lot of my clothes go in at the waist and emphasise my hips, which I'm very proud of.
I knew it was right to make time for myself to have adventures and fulfil dreams.
My digestive system was so damaged that I became allergic to almost everything, including fruit and vegetables, and the only thing I could stomach was chicken and chips.
I became allergic to virtually all fruits and vegetables, and my weight tumbled. I am 5ft. 10in. but dropped to just 8 st. 7lbs.
I've been amazingly lucky, and believe me, I don't take anything for granted.
Along the way, I learned a lot about being told I didn't have the right skills for the jobs I wanted and how to overcome the setbacks and keep pushing forward. This is why I've become an Ambassador for LifeSkills, a programme created by Barclays to help one million young people get the skills they need for work.
Radio 1 has always championed women; take Annie Nightingale, for example. One of my heroes.
With a doughnut in each hand, anything is possible.
When I was a model at 15, I was eating one red pepper a day, and if I had a big day of castings, I would survive off a bag of Haribo, which gave me the 500 calories a day that would keep me alive. I was congratulated daily on my appearance - the more vertebrae upon my back you could count, the better my auditions went.
There shouldn't be a segregation of women over a size 16, it should just be all women who want to wear beautiful clothes.
What does this Heidi Parker look like pregnant? What does she look like first thing in the morning? Or bending over? What do any of these bloody 'journalists' look like that makes them find the normal appearance of celebrities so offensive?
We are genuinely in a world that criticises women even when they are going through the biggest physical challenge of their life: pregnancy.
One of the perks of growing up, but also one of the biggest challenges, is making decisions about the future. Deciding what kind of job you want, whether you want to finish school, or whether you want to go to university are huge choices to make.
When I stepped into the industry, I was dealt this bizarre persona of being this sarcastic fashionista 'it girl' who is friends with loads of celebrities. That couldn't be further from the truth.
People are so passionate about their favourite artists making it to number 1, it almost reminds me of football fanaticism. Nowadays, it's 'One Direction' vs 'The Wanted.' Back in my day, it was 'Oasis' vs 'Blur'.
Three women in my family, close relatives, have had breast cancer, and two have died from it, and still I never thought it could happen to me. I didn't even regularly check my breasts.
The doctor said, 'You have a lump on your breast'. Hearing those words was a reminder, a kick up the bum if you like, telling me that life is very unpredictable.
So many people are campaigning, fighting, and even dying to make a statement in the name of humanity. These people have no voice that can be heard by many. I wish more celebrities would take the initiative to be that voice.
Britain's way of dealing with disability is just to try and pretend it's not happening. A swift sweep under the carpet.
Initially I struggled to find gluten-free products, but things have gradually improved, and now retailers like Holland & Barrett - with their new Free From range - are starting to cater for celiacs.