The reality star was photographed with sister Kourtney at Vera Wang's New York City store on Monday along with camera crews from their E! series Keeping Up with the Kardashians, who were documenting the outing, reports US Weekly.
The sisters are also said to have met privately with the designer in order to discuss Kim's options for the forthcoming ceremony.
Khloe, who married NBA star Lamar Odom last year, has previously expressed her desire for Kim to choose a gown by Wang, who designed her own wedding dress.
"She did mine, so I hope she does. Just because I love her, and I feel like when you think of weddings, you think of Vera Wang. I think it would be a perfect fit," Khloe told E! Online.
Kim announced her engagement to fiancé Kris Humphries in May after he proposed at her Beverly Hills home.
It was recently reported that the couple have settled on a wedding date, though it has not yet been publicly announced when the event will take place.