--Why the guest list was cut short
--Plus, all the over-the-top details, from the 720 bottles of wine and four custom-made pairs of Louboutins to the countless runs to salons and dress fittings!

Kim Kardashian and Kris Humphries will be surrounded by their closest friends and family when they celebrate their nuptials on Aug. 20 -- however, 50 unlucky guests won't be there to join in the celebration!

Life & Style has learned that due to space restrictions, the bride-to-be was forced to disinvite 50 people from her guest list -- just days prior to the wedding.

"The fire marshal got involved," a friend of Kim's reveals to Life & Style. "Once the fire department learned about all the TV equipment that's going to be inside the space -- the lights, the cameras and the production crew -- Kim was told she had to cut the guest list by 50 people!" Now, the friend says, Kim is being forced to call friends and tell them they can't come.

Though there were unforeseen bumps along the way, Kim is sure to get the magical day she's always dreamed about with four custom-designed pairs of shoes from Christian Louboutin and two dramatic designer gowns by family friend Vera Wang. And guests who did make the cut will toast to the newlyweds' love with more than 720 bottles of chardonnay, rosé, merlot and cabernet, courtesy of Malibu Rocky Oaks Wine, an insider tells Life & Style.

To add to the lavish details, Kim's beauty prep has consisted of several consultations at Beverly Hills Nail Design to try out shades of pink polish and test-driving a darker hair color for the big day. "Before the wedding, we plan to glaze her hair once or twice again," colorist and Goodform co-owner Rebecca Friedman tells Life & Style.

"Kim's definitely a calm bride," she adds. "She's just really, really excited."

For all the details leading up to Kim's big day, pick up the new issue of Life & Style, on newsstands now in New York and nationwide Friday!