Kylie Jenner and Tyga are purportedly planning to have their wedding as soon as she turns 18 on August 10.

In fact, as preparation for their wedding, there are rumors that Tyga has already asked Kylie Jenner's dad, Caitlyn Jenner, to walk her down the aisle on their big day.

Caitlyn Jenner purportedly laughed at Tyga's sweet letter expressing his intentions to marry the "Keeping Up with the Kardashians" star," but the former Olympian purportedly thinks her daughter is too young to get married.

Kylie Jenner's momager, Kris Jenner, is allegedly not taking the wedding plans as lightly as her ex-husband.

"Kris is furious, absolutely furious at Tyga for asking Cailtyn to walk Kylie down the aisle when the time comes for them to get married," the source told Hollywood Life.

"She thinks Tyga's lost his mind and compromised their friendship. She feels betrayed by him, especially since she's been his biggest supporter and friend for years. He should know better than this - Kris is really hurt by his actions."

According to the report, Kris Jenner is allegedly livid over Tyga's actions - if a woman is walking down the aisle with Kylie the day she says "I do," the momager supposedly thinks it should be her and not her ex-husband.

Radar Online has earlier reported about Kylie Jenner and Tyga's wedding plans and why they thought of tying the knot despite the reality star's tender age.

"They are making plans to quit LA, for a brand new life away from her family and his baby mamma, Blac Chyna," an insider close to the Kardashian-Jenner clan reportedly told the publication.

"Kylie is done with the constant criticism and micro-management from her family, especially Kim, and she's dead set on going her own way as soon as possible."

According to the report, Kylie Jenner and Tyga are allegedly thinking of moving to New York or even Europe after the wedding.