Kim Kardashian’s Wedding Beauty and Fitness Prep Secrets

 GSI Media

Since getting engaged to her basketball beau Kris Humphries in May, Kim Kardashian has been in full-blown bridal mode getting ready for the big day, which is scheduled for the end of August.

And while the reality superstar, 31, has yet to reveal the details of her gown, here's a peek at how she plans to look her most gorgeous when she walks down the aisle.

Buff Up: She has enlisted star trainers Gunnar Peterson and Tracy Anderson to refine her shape. "With me, she's doing free-arm [exercises], where I'm changing the movements all the time, and also dance aerobics," Anderson tells Us Weekly. As for diet, a source says, "she's cut out fatty foods and sugar."

Trial Run: Kim lightened her dark locks June 29 "to see if it's what she wants for the big day," reveals Rebecca Freidman of Hollywood's Goodform Salon.

PHOTOS: Kim's best hairstyles ever

Nip/Tuck: The brunette isn't the only one updating her look. Mom Kris Jenner, 55, just got a face-lift from Beverly Hills surgeon Garth Fisher. "It refreshed her appearance around the eyes, jawline and necks," he tells Us.

And the most important thing on Kim's wedding to-do list: stay calm, since she was recently diagnosed with psoriasis, a skin condition that flares up during stressful times.

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