Avril & Brody's Matching Tats

4/12/2010 12:25 PM PDT

Avril & Brody's Matching Tats -- The Pics

Avril Lavigne and Brody Jenner got his and hers matching tattoos in Las Vegas over the weekend -- and TMZ has obtained photos of the permanent marking in action.

The couple rolled into Mario Barth King Ink in The Mirage Hotel in Las Vegas on Saturday night -- where they both requested matching lightning bolt tattoos -- his on the neck, hers on the wrist.

Just three weeks ago, we got Avril walking out of a tattoo parlor in L.A. with her ex, Deryck Whibley -- and they each had bandages on their forearms.

Tattoos are permanent, boyfriends are not.