Jennifer Lopez american idol dress sequin heels
american idol Casper Smart jennifer lopez jeans

It's not hard to see who the biggest star on the American Idol set is this season!

Looking 60s-chic in a white baby doll dress that was covered in pearls, and sexy black pumps with diamond accents, Jennifer Lopez showed off her perfect legs while she commanded her very large team at the Idol studios in Hollywood, on Wednesday afternoon.

Meanwhile her new boytoy Casper Smart, who "centers everything on Jennifer," according to People mag, was busy chatting away with Lopez's fellow judge Randy Jackson.

While the two have only been an item for six months, Smart has reportedly shacked up at the singer's Hidden Hills mansion, which she also shares with her 4-year-old twins Max and Emme.

Think recent ex-hubby Marc Anthony is cool with that?