Twain 's third album , `` Come On Over '' , became the best-selling studio album of all time by a female act in any genre and the best-selling country album of all time , selling around 40 million copies worldwide .
Her 1997 album `` Come On Over '' became the best-selling album of all time by a female musician in any genre , and the best-selling country album of all time . It has sold more than 40 million copies worldwide .