Jenner said "hopefully it will be soon" and she's unsure whether Kardashian and West will allow her to have any input on their wedding plans.
"I don't know if they'll let me jump in," Jenner told the magazine. "That's two very creative minds getting together and they definitely have their own ideas."
Jenner's claims are consistent with what sources and West have been saying about the pair's upcoming nuptials. This will mark Kardashian's third marriage but West's first.
A source told Us Weekly earlier this month Kardashian, 33, and the rapper, 36, are planning to tie the knot at the Palace of Versailles in France.
"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!.
Kardashian and West got engaged on October 21 and have a six-month-old daughter named North "Nori" West. The threesome are currently living in Jenner's home until their own house is finished being renovated.
Rather than an imposition, Jenner insisted living with her daughter's new family has been a blessing.
"The whole way it evolved has been a dream come true for me, as her mom and... North's grandmother. Our house is blissful. To watch Kim and see her mature and grow and turn into the most delicious mother, who is interested and engaged and reads to her every day, and if she works, brings North with her -- it's very cute the way she doesn't want to be apart from her," Jenner said, adding that seeing them together has been special and amazing.
"And Kanye adores both of them. The way he speaks of them, it is so delicious and I can't explain how in love with them he is. It's really sweet to watch."