Tianna Moon, 30, from East Anglia, UK, discovered she has gigantomastia, a rare condition causing rapid breast growth, after her chest expanded from L to NN cup while losing weight on Mounjaro. Struggling with pain, bra fits, and back issues, she had a gastric sleeve and now receives physiotherapy. Tianna, from East Anglia, earns £10,000 a month on OnlyFans, embracing her condition despite public criticism, and is exploring breast reduction surgery though regrowth is possible.