Jennifer Lopez Premieres 'What is Love' Live!

Jennifer Lopez rocks some Balmain threads while performing at the Ariston Theatre in Italy’s Sanremo during the 60th Italian Music Festival on Friday (February 19).

For the first time ever, the 40-year-old entertainer performed her new song “What Is Love” from the soundtrack of her upcoming film The Back-up Plan. Watch below!

Next weekend, Jennifer will be be pulling double duty — hosting and performing on Saturday Night Live!

15+ pictures inside of Jennifer Lopez performing at the Italian Music Festival…