What happens when two besties become full-blown worsties? Avalon Greene rules the fashion scene at her sunny SoCal middle school with a diamond-clad fist, calling out classmates for their fashion-do's and most unfortunate clothes-pas . She's determined to host the social event of the season—a soiree in honor of her forever-friendship with Halley! Unfortunately, Halley's new look is one thing Avalon just can't celebrate... Halley Brandon is just back from art camp and can't wait to share her funky new style with her best friend, Avalon. But when Avalon cries fashion foul, Halley realizes her best friend's true colors may clash with her own. Has their ultra-fabulous friendship finally gone out of style? From sharing custody of their puppy, Pucci, to drawing up a list of who gets which friends, Avalon and Halley discover what happens when you battle the person who knows everything about you—and isn't afraid to use your secrets to get what she wants. Best friends. Worst enemies. Frenemies.

From besties to worsties and back again . . . Team For Avalon, staying on top of trends has never been a problem—until her fellow cheerleaders decide that her BFF Halley is definitely out this season. Now Avalon must choose between the frenemy who embarrassed her in front of everyone or the new friends who stood by her. vs. Team Halley thinks she's got it her forever-friend Avalon, her new bestie Sofee, and the hottest fall wardrobe at Seaview Middle School. Her life is a total YES. But when Sofee spies Avalon flirting with Halley's crush, will it be World War Halvalon all over again?

Imitation isn’t the sincerest form of flattery . . . Halley is psyched when her mom gets an invite to L.A.’s fashion week from her favorite designer, Gia Lamberti. The only catch? Her former best friend and now best enemy, Avalon, has to go too. With some coaxing, the girls agree to put their differences aside and gear up for a fabulous week of accessorizing, celeb-sightings, and swag. But their catwalk dreams turn into an all-out catfight when Gia steals their fashion designs. Now the best enemies must team up to take the designer down, once and for all. Published to great success in France, the third installment in the Frenemies series is now available for US fans!