Jennifer Lopez is white hot in sexy cutout dress

“Ain’t Your Mama,” indeed.

Jennifer Lopez showed off her legendary curves in a sexy, skintight white gown covered in cutouts on Instagram Sunday.

Her stylist Rob Zangardi shared the shot, seemingly an outtake from the 51-year-old entertainer’s Billboard Women in Music shoot late last year; Lopez teased the look from another angle in December.

The revealing look is the work of designer LaQuan Smith, a favorite of Lopez’s fellow superstars like Beyoncé, Rihanna, Cardi B and Kim Kardashian who describes his aesthetic as “unapologetic sexiness.”

“I don’t care if you’re old, young, black, white, married, unmarried, women want to be desired,” Smith previously told Page Six Style. “They want to feel sexy, they want to feel attractive. And so I’m tapping into that feeling and that experience. Sexy is extremely powerful and I’m not afraid of celebrating that, of celebrating the body.”

Asked why celebrities love his designs, he explained, “I think it’s the cuts. I think it’s the silhouettes. I think it’s doing too much, but not enough. I think it has a lot to do with being a ho, but being classy.”