For the event, Kardashian put on a busty display in the very low-cut corset, which she paired with a long and soft, flowing robe.
She was dazzling as she wore over 30 carats worth of diamonds from Tiffany & Co.
She highlighted her décolletage with a mesmerizing necklace with a mᴀssive gemstone at the center, and she also accessorized with opulent jewels on her earrings and rings.
The reality TV personality also sported dainty tennis anklets as she sported a pair of clear, acrylic pumps.
She styled her long, black tresses in old Hollywood-inspired waves.
The SKIMS founder leaned into the retro vibe as she completed her look with a bright pink blush and a ɴuᴅᴇ lip.
As for pop superstar Ariana Grande, 31, she looked ethereal in a vintage Pierre Balmain moment at the star-studded gala.
She donned a strapless, black-and-white gown with a polkadot pattern and a black satin belt cinched around her waist.
The couture gown featured gray satin fabric along the top and bottom hemlines for an additional, elegant detail.