"Kanye has never been married and wants a big [wedding]," a source told Us of the 36-year-old rapper.
Added an insider, "They are not working with a budget."
Although Kardashian, 33, has already been married twice, West has hinted in recent weeks he wants their big day to be an over-the-top spectacle and the reality TV star has said she's fine with the wedding being "whatever [Kanye] wants," according to E! News.
"All I know is fighter jets, man," West told Power 106FM radio station in late October, adding that he envisions a summer wedding.
Kardashian is no stranger to huge, fancy weddings. She wed ex-husband Kris Humphries in August 2011 in a heavily-promoted, two-night reality TV special which delivered huge ratings for E!.
After only 72 days of marriage, Kardashian filed for divorce from Humphries citing irreconcilable differences in October 2011. The pair finalized their divorce settlement this past June following a year-and-a-half of court proceedings and legal battles.