The 33-year-old media personality recently wore a Lanvin wedding gown on the cover of Vogue, prompting speculation that she'll choose the French designer for her actual dress.
"She's picked out her dress, and she beyond loves it," a source told E! News on Wednesday.
Kardashian reportedly plans to marry fiance Kanye West in a "confidential" civil ceremony sometime this week, before they throw a huge party in Paris next month.
Celebrity Families of 2014 [PHOTOS]
Say bye bye to Honey Boo Boo