Apparently, Marie Osmond boobs were drawing too many leers and other unwanted attention, to the point that she felt that people respected and paid more attention to her mammaries, rather than her herself.

Formerly, Marie Osmond bra size was E, with these heavies causing her some considerable back pain. She intended to be known for something other than an actress with massive jugs, a killer smile and a dreadfully aching back, which is why her original boobs had to go! The Marie Osmond boob job is however not typical of most other celebrities, who usually desire a massive increase, rather than a decrease in their breast sizes. The clear reason behind this is that her breasts were considerably bigger in the past too but they weren't as big as they are today. Have a close glimpse in the above given picture and make your thoughts.

Yes, she has one of the best upper body that any woman can ask for and that’s why many people questioned whether her breasts are real or fake.
Incidentally, the above information makes rumors of Marie Osmond breast implants are may be true.