It looks like Miley Cyrus isn't the only one palling around backstage with Avril Lavigne -- Demi Lovato is too! The two pop stars snapped several photos together while backstage at Lovato's Buenos Aires tour stop last night, May 6.

"Backstage Twinzies with my Girl Demi Lavato! [sic]" Lavigne captioned the fun shots, which show the ladies of pop rocking the Skrillex hair and pouting into the camera. While Lovatics quickly called the 'Complicated' singer out on spelling Lovato's last name incorrectly, most were able to look past the error and instead just freak out over the fact that the two were hanging out together. In fact, "Demi [and] Avril" became a trending topic on Twitter last night.

Fans weren't the only ones excited about the union -- Demi Lovato was super psyched to have the fellow artist (and "twin") by her side, tweeting:

Twitter

And, of course, Lavigne had a great time at the show, later taking to Twitter to express her enthusiasm for the concert (which Lovato later retweeted):

Twitter

Super cute! Check out the pics of Demi Lovato and Avril Lavigne hanging out together, which you can see both above and below. PopCrushers + Lovatics, what do you think of Demi + Avril hanging together?