Dolly Parton's infamous breasts have helped her gain tons of attention — and tons of pain at the same time! The 71-year-old country singer's bountiful [expletive] gave her career a big boost, but now she's facing crippling agony from her massive implants, which once exploded and pumped dangerous silicone into her body.

Parton has been battling her bust for decades. Her enormous breasts — which have up-sized and downsized over the years — have increased her fame and her pain.

Now the stress on the 5-foot-1 superstar's frame from her 38DD chest is giving her severe backaches again — and docs are advising her to reduce them in size by half.

"Dolly's in agony — but she's worried if she has them reduced, her fans will revolt!" a source said. "They're her biggest assets, no pun intended, and they're as