Jennifer Lopez wowed the crowds at the World Music Awards in Monaco yesterday wearing three glamorous designs by Roberto Cavalli: She posed on the red carpet in a plunging leopard-print halter gown paired with a snakeskin clutch and silver bangles and rocked the stage with a medley of her greatest hits in a sequined and fringed minidress paired with thigh-high boots. She then accepted the prestigious Legend for Outstanding Contribution to the Arts award (past winners include Michael Jackson, Elton John and Madonna) wearing a backless gold and black tiger-print gown with a feathered train. Lopez is a true fan of Cavalli’s sexy cuts and sensational prints (she chose his ensembles for her 40th birthday celebration and onstage duets with husband Marc Anthony) and a friend as well: Cavalli loaned the couple his yacht this week, where they’ve been spotted cruising the French Riviera with their adorable twins, Emme and Max.