Life with Gigantomastia: A 30-Year-Old’s Journey
A 30-year-old woman from East Anglia has revealed how a rare medical condition causes her breasts to grow uncontrollably, now measuring at 34NN. Tianna Moon was diagnosed with gigantomastia – an extreme form of macromastia affecting approximately 1 in 100,000 people – after noticing paradoxical breast growth during weight loss treatment.
The Physical Toll of Excessive Tissue Growth
“The side effects include frequent numbness in my arms and severe shoulder indentations from bra straps,” Tianna explained. “I’ve developed light scarring under my breasts where underwires have torn my skin. Lying on my back becomes difficult as it restricts airflow.”
Her condition became particularly noticeable when Mounjaro weight-loss medication helped her shed three stone in 2024, while her breasts simultaneously grew from an L-cup to M-cup. This unexpected development led her to research medical conditions before receiving official diagnosis confirmation in July 2025.
Turning Challenges into Opportunity
After a head injury left her unable to maintain traditional employment, Tianna began creating adult content in 2021. She now reportedly earns approximately £10,000 monthly from subscribers who appreciate her unique physique. “I might as well reap the benefits of my medical condition rather than focus solely on the negatives,” she stated.
While considering reduction surgery, medical professionals have cautioned that her breast tissue would likely continue growing post-operation. Tianna has undergone gastric sleeve surgery and been referred for physiotherapy to manage her symptoms.
Another Case: Summer’s Story
Daily Struggles with Extreme Breast Size
Summer Robert, 25, faces similar challenges with her 28-30O cup measurements. Carrying approximately 25kg of breast weight daily, she requires a doctor-prescribed corset for support. “If I’m walking, my back feels broken – the pain becomes intense,” Summer described. “Simple tasks like washing dishes require specialized support.”
Unable to obtain reduction surgery due to BMI restrictions, Summer has also turned to content creation, building a community that helps her maintain confidence. Aquatic activities provide temporary relief: “Swimming offers weightlessness, but exiting the water brings back the horrific pressure.”
Navigating Public Perception
Both women report facing public scrutiny and unwanted attention throughout their lives. “People accuse me of begging for attention by not getting surgery,” Tianna shared. Despite these challenges, she maintains a pragmatic outlook: “My subscribers aren’t creepy – they genuinely appreciate my body and support me.”
Medical reports indicate fewer than 300 documented gigantomastia cases worldwide, with treatment options remaining limited. Patients typically manage symptoms through specialized support garments, physical therapy, and in some cases, surgical interventions with varying success rates.
