Just four months into her relationship with "The Hills" star Brody Jenner, Avril Lavigne has taken the plunge. No, the divorced 25-year-old singer isn't getting married again, but according to gossip site X17, she and Jenner recently got each other's names tattooed on their torso.

Paparazzi photos of Lavigne and Jenner on a recent trip to the beach show the word "Brody" imprinted just below Lavigne's right breast and what appears to be her first name on the inside of his arm. The couple displayed their new ink during a recent July 4 outing in Malibu, California, where they were photographed hugging on the beach and paddling surfboards in the water.

In May, the couple also reportedly got the word "F---" tattooed on their respective rib cages after just a month together. (Avril confirmed her "F---" tattoo when she appeared in the June/July issue of Inked.) That followed their first double-inking, in April, when they got matching lightning bolts during a trip to Las Vegas.

Lavigne has a history of getting matching tats with pals and lovers, including a small pink heart surrounding the letter "D" in honor of her former husband, Deryk Whibley, singer for Sum 41. She's also got a star on the inside of her left wrist that matches a tat on the body of musical collaborator/producer Ben Moody, ex-guitarist for Evanescence.

Lavigne, who is working on songs for her fifth album, was most recently heard on Almost Alice, an album of music inspired by Tim Burton's "Alice in Wonderland" that included her [article id="1632293"]lead track, "Alice."[/article]

Should couples get matching tattoos? Would you do it? Discuss it in the comments!

"The Hills: Final Season" airs at 10 p.m. ET/PT every Tuesday, followed by "The City" at 10:30 p.m. ET/PT on MTV.