Khloe and Lamar Inky Swear

10/26/2009 6:00 PM PDT

Khloe and Lamar Inky Swear

Well at least something's finally official in the Khlomar "marriage": The couple got matching tattoos to signify their still-not-quite-legalized union.

According to Khloe's website, the couple stopped by Tattoo Mania in Los Angeles Saturday night on a whim and got tattoos of each other's initials on their hands.

Now if only this weren't the only permanent step they've taken so far ...

We're told the total bill was $160 -- and the couple left more than a $60 tip.