Kim Kardashians wows at the NBCUniversal Upfronts on May 15 in NYC. Credit: Erik Pendzich/REX USA

Holy cleavage, Batman! With her wedding just days away, Kim Kardashian turned up the fashion drama at the NBCUniversal Upfronts on Thursday, May 15, in New York City. Though she wore a long-sleeve black dress, the reality star's plunging neckline provided plenty of cleavage, and a giant slit up the middle flashed lots of leg. 

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By her side was younger sister and Keeping Up with the Kardashians costar Khloe Kardashian, who sported a fierce black dress with a champagne corset top underneath. Khloe's frock also displayed lots of leg.

Kim wore her hair slicked back and down while Khloe's luscious ombre locks were kept down and tousled. Both reality stars wore minimal jewelry, black stilettos, and black nail polish. 

The pair were promoting the upcoming season of KUWTK, which airs on NBC's sister network E!. Kim's May 24 wedding to rapper Kanye West will likely be her next big event, and though the ceremony was originally thought to take place in Paris, France, some reports now claim the couple will wed in Florence, Italy. 

"Kim and Kanye have told all guests different info," a source tells Us Weekly. "No one knows all of the details."