The 19-year-old pop star and Canadian songstress both recently posed for pics while sticking out their tongues (à la Miley).
Just yesterday, the Biebs shared a black and white selfie of himself wearing a white bathrobe and baseball cap. The "Boyfriend" singer raises one eyebrow as he sticks out the tip of his tongue. He left the shot caption-less.
Meanwhile, Lavigne's tongue wagging went down while she arrived to tape an episode of Jimmy Kimmell Live earlier today in Hollywood.
Lavigne showed up to the back entrance wearing a camouflage jumpsuit that was unbuttoned to show off her spiked and studded black bra. The rocker donned pink makeup around her eyes that matched her pink tongue, which was out for fans and photogs to see.
"We RockNRolled @jimmykimmel #RockNRoll," Lavigne tweeted from backstage with a pic of her and bandmates all posing together. This time, her mouth was closed and tongue in its proper place.