The 46-year-old actress stunned on the Golden Globes red carpet on Sunday, sporting an eye-catching yellow Giambattista Valli Haute Couture cape dress and a whopping 240 carats of Harry Winston diamonds.
"We try on a couple different things," Lopez told ET about how she landed on the incredible dress. "It's always a fun night at the house and they bring over all the dresses, and we try them on and we see what feels good."
"We're very fashion today," she also told ET correspondent Joe Zee about her unexpected choice. "That's part of who I am too -- [sexier, more revealing dresses] -- but I love fashion, you know that. I love fashion and so I love experimenting."
Still, Lopez said that she sticks to her "signature style."
"It's kinda classic and sexy and feminine, you know, and I stay in that circle," she said.
Coincidentally, J.Lo was also channeling another fashionable actress on the red carpet with her leg-baring pose -- Angelina Jolie at the 2012 Oscars, when the By the Sea director was determined to show off the thigh-high slit on her Atelier Versace dress.
Of course, J.Lo's fabulous dress and fierce pose wasn't the only thing turning heads -- her 240 carats of diamonds ensured that she literally dazzled. J.Lo's Harry Winston diamonds included a Winston Cluster Diamond Wreath Necklace (46.95 carats), a Caftan Cascading Drop Diamond Necklace (68.40 carats), a Mrs. Winston Diamond Bracelet (45.05 carats), a Pear, Marquise and Round Brilliant Cut Diamond Bracelet (59.27 carats), a Yellow Diamond Drop Earrings (16.46 carats), a Diamond Band Ring (5.21 carats), and a Radiant Cut Yellow Diamond Ring with Diamond Side Stones.
"Probably last year when I bought my first apartment in New York," the American Idol judge said when asked when she knew she had arrived in show business. "I used to dream about that when I was growing up in The Bronx."
"It's just growth," she continued about her long-standing career. "You guys got to see me all through my early 20s and into my 30s and now I'm in my 40s -- going from a girl to a big girl."