The couple - who have five-month-old daughter North together - got engaged last month after the rapper proposed at the AT&T Park baseball stadium in San Francisco in front of her family.
Kim's mother Kris is very excited about the nuptials but has no idea when they will happen, although she is hoping for a 2014 ceremony.
In an interview with Entertainment Tonight correspondent Cheryl Woodcock Kris was asked if she knew when the wedding will take place, to which she replied: ''As soon as I know, I'm going to let you know. Hopefully, probably, next year.''
Kris also revealed Kim is yet to pick her bridal gown when quizzed by Cheryl, only answering: ''Not yet.''
Kris - who also acts as Kim's manager and oversees the affairs of her other daughters Khloe and Kourtney - recently revealed she will have no input in Kim's wedding dress decision.
Instead, the 58-year-old star - who has separated from her husband Bruce Jenner - will let her 33-year-old daughter make all the decisions about her bridal gown by herself.
Kris said: ''(She can wear) whatever she falls in love with. I think that's so specific to a bride. You can imagine what she might wear, but she's got to feel it and put it on and think, 'This is the dress!' ''
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