sexy teen girl: Reggie Bush

Kim Kardashian Suing Old Navy Over Doppelganger Commercial

There is only one Kim Kardashian -- and nshe's declaring a legal war on Old Navy for using a look-alike in a recent ad campaign, TMZ has learned.

Kardashian is filing a lawsuit against the clothing giant, claiming they intentionally used a look-alike in an effort to dupe the public into thinking Kim was affiliated with Old Navy.

We're told Kim is especially furious that Old Navy has been tweeting to her page about the look-alike in an effort to gain even more publicity.

One of those tweets read, "@CBSNEWS reports that Old Navy's Super CUTE star looks like @kimkardashian. #LOL. What do you think?"

We're told Kim believes the copycat campaign has damaged her wallet somewhere in the range of $15 to $20 million.

It probably doesn't help that her ex-boyfriend Reggie Bush is also rumored to be dating the look-alike.

Kim Kardashian: Spandex Sexy In Beverly Hills

Treating herself to a post-workout meal, Kim Kardashian was spotted at Nate and Al's diner in Beverly Hills, California earlier today (July 11).

The 30-year-old "Keeping Up With The Kardashians" star donned an all-black fitness ensemble as she filled up on grub after her pre-wedding gym session.

Meanwhile, a friend of the soon-to-be Mrs. Kris Humphries has dished some all-important details about Kim's quest to find the perfect wedding dress, telling press, “Everything became real when Kim tried on gowns for the first time. When she tried on a veil, she started to tear up. She said she knew it was all meant to be! She’s on cloud nine right now.”

As for what type of dress we can expect to see on Kardashian for her forthcoming nuptials - her pal says it could be just about anything, as the insider told the mag, "Strapless bodices and different-shaped skirts, everything from slinky satin to fuller mermaid style. She wants it to be a little bit of high fashion, but also timeless, classic and classy. It will be ivory, and most of the detailing will just be stitchwork or beading."

Hollywood Gossip

Enjoy the pictures of Kim Kardashian out in Beverly Hills (July 11).