Selena Gomez appeared on “The Tonight Show” starring Jimmy Fallon in yet another custom-made classic little black dress. While the trio never ceases to fascinate me, the real star of the show was Rare Beauty founder Zuhair Murad's custom-made black off-the-shoulder midi dress. There is so much to love about this dress: the sharp split-V neckline, the long sleeves, the high slit, and the clean lines. Too bad this beauty is one of a kind! Fortunately, there are many similar styles from Carolina Herrera, Chouche/Tong, and Saint Phaph.

Gomez, who recently became a billionaire, finished her look with a diamond ring, Christian Louboutin pumps, and a shiny brown lip.

The hyper-fixation on her little black dress began at the Toronto International Film Festival, where stylist Erin Walsh dressed Gomez for multiple promotional appearances for Emilia Perez. For daytime press, Gomez wore an Anine Bing mini dress with three-quarter sleeves and sheer black tights. For evening, she glammed up in a Saint Laurent black long-sleeved dress with a feathered neckline and Tiffany & Co. large link earrings. Large Link Earrings.

Of course, she saved her most glamorous gown for the movie premiere. Wearing Tiffany diamond earrings and rings, Gomez walked the red carpet in a custom Rodarte black sequin gown with rosette detailing at the neck and a peplum waist. A generous application of bright red lipstick and a deep side part styled with Old Hollywood waves completed the attention-grabbing look.

The beauty of the little black dress is that it can be rearranged a million different ways without losing its essence; the LBD is not a trend, it's a way to look good in a little black dress. Just ask Selena Gomez.