A Lindsay Lohan And Ashlee Simpson Truce?

Say it isn’t so. The teen popsters have allegedly put aside their feud. Now if only Britney Spears and Christina Aguilera could put their differences aside, the world would be in perfect harmony.

The starlets reportedly spent quality time together backstage at Coldplay’s concert Sunday night in Irvine, Calif., where they enjoyed an extended tête-à-tête. The apparent détente comes about a week after Ashlee denied Lindsay was the inspiration for her new song “Boyfriend,” in which she warbles, “I didn’t steal your boyfriend.”

Lohan, you’ll recall, reportedly barred Simpson from her post-MTV Movie Awards bash in June because she believed the acid-reflux-suffering-singer-turned-thespian was snuggling up to her former squeeze, the irresistible babe magnet known as Wilmer Valderrama.

Ashlee and Wilmer happily posed with their arms around each other Tuesday night at a shindig following the L.A. premiere of her forthcoming flick “Undiscovered.” “Wilmer and I are good friends,” Jessica’s little sis tells People. “I don’t know. We just hang out.” Also in attendance was Ashlee’s on-again, off-again beau Ryan Cabrera. She told Liz Smith this week that the porcupine-coiffed popster is now just a “dear” pal.

Maybe the two could help broker a East Coast/West Coast rapper ceasefire.

Ceasefire for Lindsay and Ashlee? [MSN]