Damn
Has she ever released a video with her speaking in her sexy Aussie accent?
Yes this account has a bunch of videos. She says she’s been diagnosed with gigantomastia and that despite losing a lot of weight that she increased 4 cup sizes and is now up to an O cup.
She looks so incredibly hot. She said she won’t get a reduction right now. I think because it’s expensive and there’s no guarantee that it will stop the growth.
As I’ve pointed out on the Challenge Margaret thread - she’s a 38K - she’s saying she’s an O cup because the label has it listed as an Eu ‘O’, but the bra she’s trying on is a Curvy Kate - and they only make bras up to KK (UK).
She’s from Australia, so, I’m thinking that she would ordinarily look at the AU 16K (assuming that means Australia), but her biggest fan base is America and Europe, and that clearly says O for both. The UK cup sizes don’t relate to anything in my head without my looking at a cross reference, which is probably why I ignore most references to them, LOL. I mean, to me, they only make bras up to O. 
But, yeah, she’s both an O cup and K cup, isn’t she?
Well… Curvy Kate bras are made for the UK market, and the corresponding Eu or Au size is noted on the label - but the Eu uses different metrics (cm instead of inches, for example) and different charts for cup sizes. For an exact size, I’d go with the UK measurement (not because I’m from the UK, but because it’s an industry standard now - all other sizes are compared to the UK bra measurement, in this case).
Technically, you’re right - but an O cup in the Eu isn’t an actual O cup, it’s just whatever a K cup (UK) is. Her actual physical bra size doesn’t change.
A 38K is roughly a 38” underbust and and a 53” overbust, which is a 15” difference = K cup. So, the metric doesn’t change - just the label. The idea of saying she’s an O cup conjours up unfeasibly big boobs - but while they’re big, they’re not O cups.
Saying she’s a K cup in Aus and an O cup in Eu is like saying she’s a K cup in Aus and a ZZ cup on Jupiter; the size of her boobs doesn’t change, only the way you write it down changes - depending on where you are.