Glamour model Casey, who starred on CBB earlier this year, has natural boobs and by the age of just 12 they were already a cup size DD.
Now aged 29, Casey's breasts fluctuate between a FF and GG, but she has decided to go under the knife and have them made smaller.
Writing in her column for the Daily Star today (4 August), Casey admitted that her ample assets make her feel "insecure".
She said: "I am actually having a reduction (don't worry male fans, only a couple of cup sizes smaller, nothing too drastic).
"What people may not realise is that everyone has insecurities, whether it be Joe Bloggs down the road or your world-famous supermodel.
"And so despite a confident smile and self-assured pose on the red carpet or in a photoshoot, I do have insecurities too. For me, my boobs have always been a huge insecurity."
Casey went on to explain that she cried aged 15 when she discovered they were a cup size E and she found school an emotional struggle because of the way she looked.
Working as a glamour model, Casey has forged a career off the back of her chest, however she says she still doesn't feel 100 per cent happy about her appearance. Later this month, Casey will visit a cosmetic surgeon to have her boobs reduced to a EE.
Casey is by no means the first celebrity to go under the knife and have her breasts made smaller.
Aged just 17, Hollywood actress Drew Barrymore had her natural DD breasts reduced, later saying that she "loved" the results.
Katie Price, although a fan of cosmetic procedures, went from a 32G to a 32F in 2008. The former glamour model, who first had breast implants aged 18, had wanted 32C boobs, but ended up with Fs.
Kerry Katona also had her boobs reduced in the same year, taking her from a GG to a DD.
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