Answer
Ani Lorak's highest-selling album is "Smile," released in 2005. The album was a commercial success, selling over 1.5 million copies worldwide. It featured the hit singles "Smile," "Shady Lady," and "Car Song," which topped the charts in several countries. "Smile" is considered one of Lorak's most successful albums and helped establish her as a prominent figure in the Ukrainian and Russian music industries.