The final week is filled with unexpected revelations, leading to the long-awaited moment.

The final week of the wedding is filled with unexpected revelations, leading to the long-awaited moment and the beautiful bride.

Kathy joins Paris as she heads to Washington, D.C., on behalf of a reform school bill Paris created to prevent teens from experiencing what she went through.

Paris and Carter celebrate a joint bachelor and bachelorette party in Las Vegas with family and friends; the indulgent atmosphere sends the bride-to-be into an emotional spiral.

Paris and Carter are surprised when Kathy rents a house down the beach from theirs; Kathy makes an unexpected admission to Paris, leading Paris to finally take control of the wedding.

Back in Los Angeles, Paris seeks help with the support of her mother and confronts past issues she has avoided.

Facing the mounting requirements of a bride-to-be, Paris has a breakdown -- much to the dismay and concern of her mother and sister, Nicky.

Paris and the family head to New York for the couple's engagement party, but the setting turns less celebratory as a struggle between Kathy and Carter becomes public; Paris attempts to hide behind her commitments tied to New York Fashion Week.

Paris takes a trip to Carter's hometown in Michigan to DJ a family member's wedding, but the striking difference between the Hilton and Reum families leads Paris to question Carter's plans for their future.

Paris lights up Las Vegas at the grand opening of a casino named after her great-grandfather; Carter's desire to have children soon after the marriage leads Paris to question how her life will change.

Paris balances the search for a wedding venue with her desire to record new music; Kathy Hilton wanting to stick with Hilton family traditions leads to unexpected and emotional revelations.

Paris gets caught between her fiancé and her mother when Carter and Kathy engage in a tug-of-war over wedding plans; Barron Hilton II comes to his sister's rescue when she needs help with issues from her past.

Paris Hilton begins her journey to the altar with fiancé Carter Reum, but her family and friends wonder why she seems unable to commit to the simplest of wedding details.