The 36-year-old rapper is reportedly planning to pop the question to the reality TV star - whom he has three-month-old daughter North with - in celebration of her 33rd birthday, and has even picked out the perfect ring to get down on one knee with.
A source told the Daily Star newspaper: ''Kim turns 33 today. Kanye had planned to propose for her birthday.
''He chose the ring from exclusive jewellers Boucheron on a recent trip to Paris. But everything else is top secret.''
Kanye - who cancelled a gig last minute yesterday (20.10.13) in Vancouver - is planning on sharing the engagement news at one of his shows in California as part of his 'Yeezus' tour next week, when Kim is expected to be in the audience.
The source explained: ''On the Friday when Kanye performs in Las Vegas, Kim has a birthday celebration planned at Tao nightclub.
''Now it's beginning to look like it could also be an engagement party. Other members of the Kardashian clan are scheduled to be there so it will be a family occasion.''
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