The final nail in the coffin happened at the top of the third season, when Conrad suspected Montag and Pratt had started rumors that she made a sex tape with Wahler. Montag chose Pratt, which ended her friendship with Conrad. Several aggressive moves from Pratt caused Conrad to blow up at Montag and essentially force her to choose between the best friend and the boyfriend. So she made it very clear to Montag that she didn’t approve of Pratt, which drove a wedge between their friendship. Conrad liked Pratt at first, but she soon began noticing behaviors that turned her off. It’s a tale I can recite blindfolded and hanging upside down: Montag and Conrad were enjoying the single life in Los Angeles when hair gel aficionado Spencer Pratt came along and swept Montag off her feet. The crux of The Hills is, hands down, Conrad and Montag’s bitter feud.

As we celebrate the anniversary of The Hills amid an ‘00s style resurgence, West breaks down some of the show’s most iconic fashion trends.If Conrad’s treatment of Patridge gets three strikes, the situation with Montag has all nine innings. As rich girls from beach cities with lots of time and money on their hands, the cast’s resulting fashion is an interesting mix of Chanel and $15 flip flops, of brand name denim with cheap white camisoles on top - but never combat boots on the beach (they knew better). The Hills’ camera captured the cast’s high and low fashion moments in equal measure, from their huge designer purses and bug-eyed sunglasses to their low-rise jeans and velour hoodies. “It was a mix of high and low,” says Robin Lewis West, a costume designer and ‘00s expert who worked on shows like The O.C. American celebrity culture was experiencing a seismic shift, too, thanks to the rising popularity of tabloids, which captured them strutting around town in Juicy Couture tracksuits and Uggs rather than the usual red carpet-ready looks. The designer-y excess of celebrities like Paris Hilton and Kim Kardashian was celebrated, yet with the help of the popular teen show The O.C., casual beach culture was all the rage. When The Hills premiered 15 years ago, the cast’s style was firmly rooted in the cultural contradictions of the mid-2000s. To comfort her friend, Conrad turns to insulting the man who wronged her in the language she knows best: fashion. Few moments on reality television are as iconic as Lauren Conrad's delivery of “Homeboy wore combat boots to the beach.” The line comes in response to The Hills’ bad boy Justin Bobby leaving Audrina Patridge at a bonfire without so much as a goodbye.

Lauren conrad outfits the hills