My best friend's sister. She always had big boobs like 40f, but nothing sort of the extraordinary, as she was quite chubby. Then in college she put on like 10kg (+20lbs) and they grew, prob to H cup. After college their other sister got engaged and she went under this weight loss regime to be on a "fantastic shape" for the wedding. She managed to maintain the H's and loss like 15~18kg. (I helped my friend make a homemade video about the wedding, got like 1gb of pics of her in my hard drive).
Pandemic hits, she gained all the way back plus another 15kg more, putting her in bbw territory. Those already big tits went from H to I think probably K or L. Since then she has put on at least another 10kg.
2 years ago, she came out as bi and last year hanging out at their house she introduced me to her gf. They broke up like three weeks ago but I haven't find the courage to take my shot.