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Way before Kim Kardashian donned three custom Vera Wang wedding gowns for her lavish August 20 nuptials, the reality star was already obsessed with wearing white dresses.

Case in point, with her big day just a week away, the bride-to-be did a practice run in a white Antonio Berardi gown at the 2011 VH1 Do Something Awards on August 14, and also chose a skin-tight white Alexander McQueen number for her three-hour rehearsal dinner at The Montage's Scarpetta in Beverly Hills on August 18.

And we found a nearly identical version of her rehearsal dinner look for just $138 on The "Hollywood" White Galaxy Pencil Dress has the same curve-enhancing silhouette and cap sleeves, but without the hefty designer price tag.