To play Maggie Fitzgerald in Million Dollar Baby, Hilary Swank gained 19 pounds of muscle, going from being “like a feather,” in director Clint Eastwood’s words, to a boxer. She scored an Oscar for ...

Ding ding! Sweeney’s long, flowing blonde hair is replaced with a ratty brown, she dresses in dowdy clothes, and, most visibly, she’s got muscles out the wazoo. Sweeney gained 30 pounds to play the ...