Kim Kardashian's bridal party may wear green

(CBS) Kim Kardashian's bridesmaids may don green dresses when they walk down the aisle at her wedding this weekend to Kris Humphries.

Older sister Kourtney, whose son Mason will serve as ring bearer, revealed the color choice on her Twitter.

But could her tweet just be a decoy?

Pictures: Kim Kardashian
Pictures: Celebrity weddings and engagements

A source close to the Kardashian family tells E! Online that the bridal party wearing green is "99 percent untrue."

"The theme of the wedding will consistent with the invite," the source adds. According to E!, guests were requested to wear black and white.

If this is the case, it is safe to assume they will be wearing black. However, Kardashian could follow in Duchess Kate's footsteps, allowing them to wear white. She is, after all, trying to have her wedding cake resemble the one served at the royal wedding.

Kardashian, who is feeling "totally calm" about her wedding, and Humphries are set to tie the knot this Saturday in Montecito, Calif. Their wedding will air as a two-part E! special on Oct. 9-10.