The boutique, which Kim owns along with her two sisters and will apparently offer "summer essentials," was set to host its grand opening tomorrow, complete with a special appearance at The Clevelander followed by an afterparty at Liv.
The two lesser K's were also all set to start the filming of their new reality show, Kourtney and Khloe Take Miami.
Police are currently investigating the scene, but no word yet on whether the culprits were targeting the Kardashians or just wanted some colorful tunics.
Miami Beach Police spokeswoman Deborah Doty said that the front window was scratched and the letters "GUK" were painted in black on the window frame. Doty said the graffiti "was very minute."
On her Web site, Kourtney Kardashian said that a store employee discovered the vandalism.
"All in all, the damage is pretty bad, but they're painting over it now!" she wrote.
She also said the graffiti wasn't targeting her or her sisters.
But how did the do-badders escape? Maybe out the large back entrance. (We’ll be here all week.)