Kylie Jenner wants a one-of-a-kind Balmain wedding dress.

The 'Keeping Up With The Kardashians' star is reportedly ready to tie the knot with rapper boyfriend Tyga, 25, and is already making plans for the big day.

A source said: ''Now that she's modelled for Balmain, Kylie says she'd like them to design a one-of-a-kind dress. She's been sketching wedding gowns since she was 14, so she knows what she likes.

''Kendall [Jenner] will be the maid of honour and Kim, Khloe and Kourtney [Kardashian] will be the bridesmaids. Kylie's also insisted on having Caitlyn [Jenner] walking her down the aisle.''

And whilst a custom dress made by the luxury fashion label could cost a small fortune, the 17-year-old beauty's mother Kris Jenner has a plan to make all their money back and more.

An insider added to Life & Style magazine: ''[Kris] thinks she can easily make $5 million or more from Kylie and Tyga's 'I do's.' Kylie wants this wedding to be bigger than both of Kim's weddings and Khloe's wedding to Lamar Odom, and Kris has said it's possible.

''They're talking about honeymooning in Paris after the TV wedding. Kylie's so in love with Tyga that all she cares about is spending time with him.''